IC Joshi Aviation Met Total Q.

Page 1

Meteorology (IC JOSHI) Instructor :

[Type the instructor name]

Results:

Name: Class: Period: Date:

1. Loest layer o! atmosphere is a.

Troposphere

".

Tropopause

c.#tratosphere

$. %eight o! Tropopause at e&uator is a.

1'(1$)m

b.

16-18 km

c.1$(1* )m

+. %eight o! Tropopause at Poles is a.

1$(1*)m

".

1$(1+)m

c.

08-10km

*. %igher the sur!ace temperature ould "e the tropopause a.

Higher

".

Loer

c.#ame

,. %eight o! tropopause a.

Is constant

".

-aries ith altitude

c.

Varies with Latitude

. /"o0e  )m the loer temperatures are o0er Page 1

Page $

a.

Equator

".

2id Latitudes

c.Poles

3. /tmosphere is heated "y a.

#olar Radiation

b. c.

Heat from earth surface

. Tropos means a.

Turig

".

4nder current

c.Con0ection

5. C6$ and %$6 are also called ... a.

!ree House !ases

".

Rare 7arth 8ases

1'. Troposphere is generally a.

#ta"le

b.

"stab#e

c.Neutral

11. #tratosphere is a.

4nsta"le

".

Neutral

c.

$tab#e

1$. Tropopause is discontinuous at a"out a.

+'9lat

b.

%0&'at

c.'9lat

1+. 2ost o! atmospheric mass is contained in ... Page $

Page +

a.

Troposphere

".

#tratosphere

c.%eterosphere

1*. #tratosphere etends !rom Tropopause to a.

(0km

". ')m c.*' )m

1,. The middle atmosphere layer characterised "y temperature in0ersion and sta"ility... a.

Troposphere

".

Tropopause

c.

$tratosphere

1. 2other o! pearl clouds occur in;;;;. a.

2esosphere

".

Thermosphere

c.

$tratosphere

13. The temperature in I#/ at 13 )m is .. a.

-(6.(&)

".

(,.,9C

c.(+,.,9 C

1.
1*+

".

1:*

c.1:,

15.
1:+

b.

1*%

c.1:,

Page +

Page *

$'.
+>

".

'.+>

c.

0.0+,

$1. In I#/= the mean sea le0el temperature is a. ".

1(&) 1'9C

c.$,9C

$$. 2aimum concentration o! o?one is at + height o! a.

1'(1,)m

b.

0-( km

c.+'(+, )m

$+. /dditional oygen is needed hile @ying a"o0e a.

,'''!t

".

3'''!t

c.

10000 ft

$*. C6$ and %$6 )eep the atmosphere a.

arm

".

Cold

c.%a0e no eAect

$,. Noctilucent clouds occur in a.

Thermosphere

b.

/esosphere

c.#tratosphere

$. Temperature at $ )m is ', 9C hat is I#/ de0iation a.

(',9C

b.

-0&)

c.('+9C Page *

Page ,

$3. Pressure at 2#L is 1''$.$, hPa. Bind the I#/ de0iation a.

11 ha

".

1'hPa

c.1$ hPa

$. In actual atmosphere temp= at 15 )m is ('9C. %o much it diAers !rom I#/ a. ".

(*.,9C (',.,9C

c.

-0+.(&)

Page ,

Page 

ATMOSPHERIC PRESSURE $5. inds in a lo pressure a.

)oerge

".

Di0erge

c.8o straight

+'. Lo pressure is associated ith a.

8ood eather

b.

2ad eather

c.None

+1. In a high pressure area inds are a.

Normal

".

#trong

c.

eak

+$. Blying !rom Lo to %igh an altimeter ould read a.

60er

b.

"der

c.constant

++. Isallo"ars are lines o! e&ual a.

Pressure

".

Temperature Tendency

c.

ressure Tedec3

+*. hat )ind o! a "arometer is an altimeter a.

4eroid

".

2ercury

c./lcohol

+,. / region "eteen to Los and To %ighs is a. Depression Page 

Page 3

".

#econdary Lo

c.

)o#

+.
%igh

b.

Low

c.Col +3. The relationship "eteen height and pressure is made use in construction o! a.

4#timeter

".

/#I

c.- # I

+. /ltimeter alays measure the ht o! aircra!t a.

/"o0e 2#L

".

/"o0e datum le0el o! 1'1+.$ hPa

c.

4boe datum #ee# at which its sub-sca#e is set

+5. To aircra!t @ying at the same indicated altitude ith their altimeter set to 1'1+.$ hPa. 6ne is @ying o0er cold air mass and other o0er arm air mass. hich o! the to has greater altitude a.

4c 53ig oer warm air mass

".

/c @ying o0er cold air mass

*'. The rate o! !all o! pressure ith height in a arm air mass compared to cold air mass ill "e a.

#ame

".

2ore

c.

Less

*1. /n increase o! 1''' !eet in ele0ation near the earth is associated ith decrease o! pressure o! a.

1''hPa

".

1'''hPa

c.+ hPa Page 3

Page 

d.

++ha

*$. Lines dran through places o! e&ual pressure are )non as a.

'sobars

".

Isotherms

c.Isogonal d.

Isoclinal

*+. Isoclinal a.

Trough has !rontal characteristics

b.

4fter crossig the ais of trough wids back

c./!ter crossing the ais o! trough inds 0eer

**. Diurnal pressure changes are most pronounced in a.

Polar region

".

2iddle latitudes

c.

Tropics

*,. Blying !rom Delhi to Calcutta at constant indicated altitude "ut= eperiencing a dri!t to #tar"oard. The actual altitude ill "e E-is(a(0isF indicated altitude a.

Lower

".

#ame

c.%igher

*. In the #outhern %emisphere= around a Lo Pressure /rea ind "los a.

' c#ockwise directio

".

In anticloc)ise direction

c./cross iso"ars toards the centre

*3. I! altimeter reads aerodrome ele0ation hen aGc is on ground= its su"(scale must ha0e "een set a.

7H

".

HN7

c.HBB Page 

Page 5

d.

HB7

*. Instrument !or recording pressure is called a.

/nemograph

b.

2arometer

c.%ygrograph

*5. Poor 0isi"ility is associated ith a.

High

".

Lo

c.Col

,'. 6n either side o! a.

Trough

".

Ridge

pressures rise

c.Lo

,1. Ball o! pressure ith height is more rapid in a.

)o#d areas

".

arm areas

c.%umid areas

,$. +'' hPa in I#/ corresponds to the le0el a.

$'='''!t

b.

+09000 ft

c.+,=''' !t

,+. 1=''' !t height in I#/ corresponds to le0el a.

3''hPa

".

$''hPa

c.

(00ha

,*. $'' hPa in I#/ corresponds to the le0el a.

$'='''!t Page 5

Page 1'

".

+'=''' !t

c.

%09000 ft

,,. $*=''' !t height in I#/ corresponds to le0el a.

%00ha

".

,''hPa

c.+'' hPa ,. 3'' hPa in I#/ corresponds to the le0el a.

$'='''!t

b.

109000 ft

c.1=''' !t

,3. *'=''' !t height in I#/ corresponds to le0el a.

*''hPa

".

,''hPa

c.

00ha

,. ,' hPa in I#/ corresponds to the le0el a.

3='''!t

b.

(9000ft

c.1'=''' !t

TEMPERATURE

,5. Diurnal 0ariation o! temperature is greatest hen ind is a.

ca#m

".

light

c.strong

'. Diurnal 0ariation o! temperature is maimum o0er a. ".

!orest ocean Page 1'

Page 11

c.

#ad

1. 6n a clear day the amount o! radiation recei0ed "y earth sur!ace is a.

+G*th

".

+'>

c.

(:6th

$. /L<7D6 is a.

Radiation recei0ed "y earth

".

/mount o! heat

c.

;e5ectig power of earth

+. During Day the am"ient temperature is ... than ground a.

Lower

".

%igher

c.#ame

*. Diurnal 0ariation o! temperature o0er ocean is ... a.

2ore than land

".

/"o0e +9C

c.

Less tha 1&)

,. /t a coast diurnal 0ariation o! temp= depends on .. a.

id directio

".

ind speed

c.Radiation

. #no sur!ace re@ects a"out > o! solar radiation. a.

3,>

b.

80,

c.5'>

3. /mount o! #olar radiation recei0ed per unit area is ... a.

'so#atio Page 11

Page 1$

".

Con0ection

c.Radiation

. #olar radiation recei0ed "y the earth is called.. a.

Long a0e

".

/l"edo

c.

$hortwae

5. Rise in temperature o! a sur!ace is proportional to its specic heat a.

Directly

b.

'direct#3

3'. #pecic heat o! land is a.

Lower

".

#ame

than that o! ater

c.%igher

31. 2inimum temperature is reached at ... a.

sunrise

".

midnight

c.

1: - 1 hour after daw

3$. /n air parcel is li!ted till it gets saturated. The temperature attained at this stage is called a.

Potential t emperature

b.


c.et "ul"

3+. Cloudy nights are a.

cold

".

normal

c.

warm

3*. ater 0apour is transparent to terrestrial radiation Page 1$

Page 1+

a.

completely

b.

partia##3

c.indiAerent

3,. %igher the temperature ... ould "e the a0elength o! emitted radiation a.

longer

b.

shorter

3. /ir is a "ad conductor o! heat. / parcel o! air can there!ore "e regarded as insulated !rom the en0ironment a.

Balse

b.

True

33. armer the earth a. #arger ".

... ill "e the Nocturnal radiation

smaller

3. %eat is the a.

sum tota#

".

a0erage

o! the J7 o! all molecules and atoms o! a su"stance

35. The solar radiation consists o! a"out a.

4-

b.

';

* >

c.-isi"le

'. The total amount o! energy radiated "y a "lac) "ody is proportional to a.

T$

".

T+

c.T% Page 1+

Page 1*

1. Intense radiation are emitted "y a.

Hot bodies

".

Cold "odies

c.#tars

$. The a0elength o! most intense radiation is in0ersely proportional to the.... a.

4bso#ute temperature

".

%umidity

c./l"edo

+. %ot "odies Eli)e sunF radiate a.

$hort aes

".

Long a0es

c.
*. The @o o! heat !rom earth sur!ace is 33> "y a.

#ensi"le %eat

b.

Latet Heat

,. (*'9 C ( (*'9 B a.

True

".

Balse

. #ur!ace Temp= is recorded at a height o! a"o0e ground a.

1.,m

b.

1.(m

c.$ m

3. The door o! #te0ensonKs screen should open a.

opposite to su Page 1*

Page 1,

".

intosun

c.any direction

. The li&uid used in 2inimum Thermometer is a.

mercury

b.

a#coho#

c.sprit

/T26#P%7RIC D7N#T

5. Density is at poles than e&uator a.

Higher

".

Loer

c.#ame

5'. /"o0e  )m density is a.

%igher

b.

Lower

at poles than at e&uator

c.#ame

51. The altitude in I#/ at hich air density is the same as the o"ser0ed density is called a.
I#/ Density

c.Real Density

5$. Density is usually epressed as a.

JgGs&m

b.

g:cum

c.NGs& m

Page 1,

Page 1

5+. %igher density altitude means a.

%igher

b.

Lower

density

c.#ame

5*. Bor gi0en pressure and temperature moist air has density a. b.

%igher Lower

c.#ame

5,. /ir is less denser in a.

%igh /ltitudes

".

arm/ir

c.%igh humidity d.

4## these

5. Density altitude may "e dened as: a.

The altitude in a standard atmosphere at hich the pre0ailing pressure occurs.

b.

The a#titude i a stadard atmosphere at which the preai#ig desit3 occurs.

c.#ur!ace o! constant atmospheric pressure related to standard atmosphere o! 1'1+.$ hPa

HUMIDITY 53. The ratio in > "eteen the amount o! ater 0apour present in the air to the amount o! ater 0apour that it can hold at the same temperature is a.

%umidity

b.

;e#atie humidit3

c.De point

5. The temperature to hich air "e cooled at constant pressure to "ecome saturated= is called Page 1

Page 13

a.

et "ul" temperature

".

Dry "ul" temperature

c.


d.

%umidity

55. Bree air temperature= et "ul" temperature and De point temperature are e&ual hen a. b.

/ir temperature is '9C ;e#atie humidit3 is 100,

c./ir temperature is not "elo '9C

1''.

6n a rainy day compared to sunny day the length o! runay re&uired is

a.

/ore

".

Less

c.#ame

1'1. The spread "eteen Bree air temperature and De point temperature is .... hen air is saturated a.

Large

b.

Least

c.#ame

1'$.

The saturation 0apour pressure o0er ater is

a.

/ore

".

Less

than the ice

c.#ame

1'+.

/s the temperature o! the air increases= the amount o! ater 0apour re&uired to

saturate it a.

decreases

b.

icreases

c.remains same

1'*.

The actual amount o! ater 0apour contained in a gi0en 0olume o! air at a gi0en

temperature is termed as ... a. Relati0e %umidity Page 13

Page 1

".

#pecic %umidity

c.

4bso#ute Humidit3

1',.

%umidity 2iing Ratio ;;.

a.

decreases

b.

remais costat

hen air is li!ted adia"atically

c.increases 1'.

It is the loest temperature hich air ould attain "y e0aporating ater into it to

saturate it. a.

et bu#b temp

".

Dry "ul" temp

c.De point

H47#TI6N# 6N IND

1'3.

In # hemisphere i! an o"ser0er !aces ind= lo ill "e to his

a.

Right

b.

Left

1'.

In N hemisphere due to rotation o! earth inds are de@ected to

a.

Le!t

b.

;ight

1'5.

Local inds !ollo
a.

=a#se

".

True

11'.

Coriolis !orce acts perpendicular toards

a.

Le!t

b.

;ight

o! ind direction

Page 1

Page 15

111.

8eostrophic ind is due to the "alance "eteen the !orces

a.

Coriolis and Briction

".

Pressure gradient and Cyclostrophic

c.

ressure gradiet ad )orio#is

11$.

Coriolis !orce is strongest at

a.

2id latitudes

b.

o#es

c.7&uator

11+.

8eostrophic rule "rea)s don at

a.

2id latitudes

".

Poles

c.

Equator

11*.

Bohn inds are

a.

arm

".

Cold M %umid

11,.

The ind sliding don a hill during night is called

a.

Bohn

".

/na"atic

c.

?atabatic

11.

on the Leeard side o! a mountain=

ith the onset o! sea "ree?e there is a

a.

=a##:;ise

".

RiseGBall

ind.

in temperature and

in R%.

c.BallGBall

113. a.

#ea "ree?e sets in "y

and dies oA at

NightGDay Page 15

Page $'

b.


c.
11.

I! an aircra!t in N(hemisphere @ies !rom % to L it ill eperience

a.

$tarboard d rift

".

Port dri!t

115.

In N(%emisphere i! you eperience Port dri!t = altimeter ill read

a.

"der

".

60er

1$'.

Lines o! constant ind speed dran on eather charts are called

a.

Iso"ars

b.

'sotachs

c.Isogons

1$1.

#&uall are distinguished !rom gusts "y:

a.

#horter duration

b.

Loger duratio

c.Loer ind speed

1$$.

The thermal ind is:

a.

The ind that "los "ecause o! thermals

".

The arm ind that "los don the hl on the leeard side

c.

The wid which must be added ectori##3 to the #ower #ee# geostrophic wid to obtai the upper #ee# geostrophic wid

1$+.

6n a eather map here iso"ars are closely pac)ed= the sur!ace inds are li)elyto

"e a.

Light and parallel to iso"ars

b.

$trog ad para##e# to isobars

c.#trong and "loing acros theiso"ars Page $'

Page $1

1$*.

/na"atic ind occurs

a.

/tnight

".

/ny time o! day and night

c.


1$,. a. b.

1$.

/na"atic ind is stronger than )ata"atic True =a#se

Jata"atic ind is don slope cold ind due to nocturnal cooling

a.

True

".

Balse

1$3.

Jata"atic ind occur due to sin)ing o! air don the hill slope

a.

True

".

Balse

1$.

/na"atic ind occur due to donard mo0ement o! air along 0alley

a.

True

b.

=a#se

1$5.

#ea "ree?e is stronger than land "ree?e

a.

True

".

Balse

1+'.

The ind "los cloc)ise around lo in a N(hemisphere

a.

True

b.

=a#se

Page $1

Page $$

1+1.

The ind "los cloc)ise around lo in #(hemisphere

a.

True

".

Balse

1+$. a. ".

1++.

The ind "los anticloc)ise around lo in N(hemisphere True Balse

The ind "los anticloc)ise around lo in #( hemisphere

a.

True

b.

=a#se

1+*.

The resultant ind that "los under the in@uence o! pressure gradient !orce=

geostrophic !orce and cyclostrophic !orce is called a. !radiet wid ".

1+,.

8eostrophic ind

Due to !riction= !rom day to night !or an iso"aric pattern Ein N hemisphereF #ur!ace

ind "ac)s and lulls a.

True

".

Balse

1+.

The inds hich spiral inard in a counter(cloc)ise direction in the N% are

associated ith a.

Tur"ulence

".

%igh pressure area

c.

Low pressure area

1+3. a. b.

Loer le0el ind ','1' )t= upper le0el ind $+'', )t= hat is the thermal ind ','',)t +01( kt Page $$

Page $+

c.','1, )t

1+.

/ change in ind direction !rom +1'9 to '$'9 is

a.


b.

Veerig

1+5.

/ change !rom $3'9 to $,'9 is

a.

2ackig

".

-eering

1*'.

#udden change in ind speed !rom 1' )t to +' )t and then to 1, )t is

a.

!ust

".

#&uall

1*1.

#udden change in ind speed !rom 1' )t to +' )t !or more than a minute or so is

a.

$qua##

".

8ust

1*$.

/ signicant ind shear can "e associated ith T# or line s&uall

a.

Balse

b.

True

1*+.

Cyclostrophic ind gi0es a good approimation o! the $'''K ind in an intense

tropical storm a.

True

".

Balse

1**. a.

Rotor clouds ha0e etremely tur"ulent @ying conditions Balse Page $+

Page $*

b.

1*,.

True

Briction causes inds to @o cross iso"aric "y

a.

+0:1(&

".

$'G+'9

o0er land and .... o0er sea

c.*'G+'9 1*.

I! temperature is higher to the # and loer to the N !rom sur!ace up to higher le0els = then the

ind ill strengthen ith height ith no change in

direction in N hemisphere a.

7ly

b.

#3

c.#ly d.

1*3.

Nly

8radient ind is

a.

4nder estimate

".

/ccurate

c.

@er estimate

1*.

o! geostrophic ind in an anticyclone

8ale is

a.

persistent strong inds ith mean speed ** )t= associated ith thunderstorm

".

mar)ed increase in ind speed lasing !e minutes associated ith C< or dust storm

c.

1*5.

persistet strog wids eceedig ++ kt9 associated with depressio

In N hemisphere thermal ind is parallel to ...ith lo 0alue to le!t

a.

Iso"ars

b.

'sotherms

c.Isallo"ars

/T26#P%7RIC -I#I
Page $*

Page $,

1,'.

Bog is reported hen 0isi"ility is reduced to

a.

Less tha 1000 m

".

1'''m

c.1''' to $'''

1,1.

R-R is reported hen 0isi"ility !alls "elo

a. ".

,''m 1'''m

c.

1(00m

d.

$'''m

1,$.

Radiation !og occurs

a.

@er #ad

".

60ersea

c.During day

1,+.

hen 0isi"ility reduces "eteen ,''' m and 1''' m and R% is almost 1''>= it is

a.

/ist

".

%a?e

c.Bog

1,*.

Radiation Bog !orms o0er N India during

a.

2ay to Oune

b.


c.6ct to No0

1,,.

arm and moist air mo0ing o0er a cold ground gi0es rise to:

a.

Thunder clouds

b.

=og ad stratus

c.Brontal clouds

1,.

arm and moist air mo0ing o0er a cold sur!ace causes

a.

Radiation Bog

b.

4dectio =og Page $,

Page $

c.Brontal Bog

1,3.

The radiation !og !orms due to

a.

%eating o! the earth during day

b.

;adiatioa# coo#ig of earth at ight

c./d0ection o! cold air

1,.

The radiation !og acti0ity increases a!ter the passage o! a...

a.

<

".

Depression

c.Col

1,5.

Radiation !og is essentially a

a.

octura#

".

Dus)

phenomena

c.Day

1'.

The radiation !og !orms o0er

a.

ater

b.

Lad

c.
11.

The !og lorms due to hori?ontal mo0ement o! air

a.

Radiation

b.

4dectio

c.Brontal

1$.

/d0ection !og !orms during

a.

night only

".

day time only

c.

a3 time of da3 ad ight

1+. a.

Bor !ormation o! Radiation !og There should "e sucient moisture in atmosphere= cloudy s)y= nil ind Page $

Page $3

b.

There shou#d be suAciet moisture i atmosphere9 c#ear sk39 #ight wid.

c.There should "e sucient moisture in atmosphere= cloudy s)y= strong ind

1*. a. b.

Instrument used !or measuring 0isi"ility... -isiometer Trasmissometer

c.Ceilometer

1,.

/d0ection !og !orms

a.

o0ersea

".

o0er Land

c.

both oer #ad ad sea

VERTICAL MOTION AND CLOUDS 1.

Dri??le occurs !rom

a.

C#

b.

$T

c.N# d.

13.

C4

/ltostratus E/#F is

a.

Lo cloud o! sheet type

b.

4 medium c#oud of sheet t3pe

c./ cloud o! large 0ertical groth d.

/ high cloud o! sheet type Page $3

Page $

1.

#hoers occurs !rom

a.

C4

b.

)2

c./# d.

15. a. ".

/C

%ea0y icing is possi"le in CI C#

c.#T d.

13'.

)2

To a0oid icing in cloudy conditions= a pilot is ad0ised to @y through a cloud hich

shos an optical phenomena a.

Ha#o

".

Corona

c.ith multi(coloured clouds

131.

Dar) gray cloud gi0ing continuous rain is called

a.

/#

b.

$

c.#T d.

13$.

C<

/ uni!orm layer o! cloud resem"ling !og "ut not on the ground

a.

/#

".

N#

c.

$T

13+.

The clouds composed o! ice crystals ha0ing !eathery appearance

a.

)'

".

C#

c./#

Page $

Page $5

13*.

N# clouds occur

a.

/t cold !ront

b.

4t warm frot

13,.

%alo is associated ith the cloud

a. ".

/C /#

c.

)$

d.

CI

13.

Corona is associated ith the cloud

a.

4$

".

/C

c.CC d.

133.

C#

Lenticular clouds indicate presence o!

a.

arm Bront

".

Cold !ront

c.

/outai waes

13.

The loest le0el "elo hich condensation trails ill not !orm is

a.

/itra Lee#

".

Drytra Le0el

c.2atra Le0el

135. a.

Rain !alling !rom cloud "ut not reaching ground is -irgo

b. Virga c.2irage Page $5

Page +'

1'.

C< ith distinct an0il is called

a.

Castellanus

b.

)api##atus

c.4ncinus

11.

Cloud ceiling is the height o! the cloud co0ering

a. ".

+(*G G

c.

(:8 or more

1$.

No condensation trails occur a"o0e

a.

/atra Lee#

".

Dytra Le0el

c.2intra Le0el

1+. Cloud o! operational signicance has "ase "elo minimum sector altitude= hich is greater a.

1(00

".

$'''

m or "elo the highest

c.1'''

1*.

/C cloud ith cumuli!orm protu"erances are indicati0e o!

a.

#ta"ility

b.

'stabi#it3

c.Neutrality

1,.

%ail may "e eperienced under the an0il o! a C<

a.

True

".

Balse

/T26#P%7RC #T/
1.

D/LR Q 5. 9C= 7LR Q . 9C  atmosphere is Page +'

Page +1

a.

stab#e

".

unsta"le

c.indiAerent

13. a.

#/LR Q ,., 9C= 7LRQ *., 9C  atmosphere is unsta"le

b. stble c.indiAerent

1.

D/LR S 7LR S #/LR

a.

coditioa##3 stab#e

".

latently sta"le

c.potentially sta"le

15.

Dry air is unsta"le hen

a.

7LR(D/LR

b.

EL;B<4L;

c.7LRD/LR

15'.

The saturated air is said to "e unsta"le i!

a.

#/LRQ7LR

b.

$4L;CEL;

c.#/LR S 7LR

151.

I! 7LR Q #/LR ( D/LR the atmosphere is

a.

#ta"le

".

Insta"le

c.

'diDeret

15$. a.

D/LR means: The rate at which temperature of usaturated parce# of air fa##s with height

".

hen made to ascend adia"atically

c.The rate at hich temp !alls ith height Page +1

Page +$

d.

15+.

The rate at hich ascending parcel o! saturated air cools

The sur!ace air temp= is +'9 C. /ssuming D/LR pre0ailing hat is the temperature

at $ )m a.

19C

b.

10&)

c.*$9 C

15*.

/n Isothermal atmosphere is

a.

$tab#e

".

4nsta"le

c.Neutral

15,.

I! en0ironmental lapse rateE7LRF is less than #/LR= that part o! the atmosphere is

said to "e: a.

/"solutely unsta"le

".

Conditionally sta"le

c.

4bso#ute#3 stab#e

15.

D/LR is approimately

a.

,9CG)m

".

1,9CG)m

c.

10&) :km

153.

#/LR at mean sea le0el is a"out

a.

1'9CGJm

b.

(&):?m

c., 9 BGJm

15.

#/LR approaches D/LR

a.

at'9C

".

at(1,9B

c.

at-%0&)

Page +$

Page ++

155.

Dry air ha0ing a temperature o! +,9C on sur!ace hen !orced to rise adia"atically

"y 1 )m ould attain a temperature o! a.

$59C

b.

(&)

c.*,9C

$''.

In0ersion in the atmosphere indicates

a.

$tabi#it3

".

Insta"ility

c.Neutrality

$'1.

In0ersion is Lapse Rate ELRF

a.

Positi0e

b.

egatie

c.Neutral

$'$.

7n0ironmental LR can "e more than D/LR

a.

True

".

Balse

$'+.

The process hich to a large etent determines the 0ertical distri"ution o!

temperature in atmosphere is a.

4diabatic

". Isothermal c.Isentropic

$'*.

Rise in temperature ith height is

a.

'ersio

".

Lapse

c.EcF Normal

$',. a.

In0ersion is common in Post 2onsoon Page ++

Page +*

".

2onsoon

c.

iters

OPTICAL PHENOMENA IN THE ATMOSPHERE

$'.

/urora /ustralis occur in the

a.

$ hemisphere

".

N hemisphere

c.7&uator

$'3.

/urora /ustralis called .... Lights

a.

Northern

b.

$outher

c.Temperate

$'.

/urora
a.

# hemisphere

b.

 hemisphere

c.7&uator

$'5.

/urora
a.

orther

".

#outhern

c.Temperate

$1'.

Corona occur in clouds

a.

4$

".

N#

c.C#

$11.


a.

ater

b.

dust

c.ice Page +*

Page +,

$1$.

The radius o! the
a.

+$9

b.

&

c.*$9

$1+.

#uperior 2irage occurs in mar)ed

a. ".

Lapse Isothermal

c.

'ersio

$1*.

In!erior 2irage occurs hen there is

a.

Lapse

".

Isothermal

c.In0ersion

$1,.

Corona are !ormed due to the

a.

Re!raction

b.


o! light

c.#cattering

$1.

Corona are !ormed due to light= passing through

a.

2istonly

".

Bogonly

c.small ater or ice particles only d.

$13.

43 oe of a## these

%alo is produced "y

a.

;efractio

".

DiAraction

c.#cattering

$1.

%alo is produced hen light passes through

a.

ater particles

b.

ice cr3sta#s Page +,

Page +

c."oth

$15.

%alo occur in the cloud

a.

/#

".

N#

c.

)$

$$'.

%alo is luminous ring o!

a.

+$9

b.

&

radius

c.*$9

$$1.

%alo round the sun shos a pure clear

a.

;ed

".

ello

on the outside

c.-iolet

$$$.

%alo signies predominance in the cloud o!

a.

#upercooled ater drops

b.

'ce cr3sta#s

c.
$$+.

The cloud hich cause %alo has ... chances o! ice accretion

a.

eg#igib#e

".

maimum

c.medium

$$*.

#ometimes a halo ith a radius o!

a.

+$9

b.

%&

is o"ser0ed= called Large %alo

c.$$9

$$,. a.

%alo occurs !rom.... cloud Lo Page +

Page +3

".

2edium

c.

High

PRECIPITATION

$$.

hen super cooled ater drops and ice particles co(eist= the ice crystals gro at

the epense o! the ater drops "ecause a. #aturation 0apour pressure o0er ater drops is less than o0er the ice crystals b.

$aturatio apour pressure oer the ice cr3sta#s is #ess tha oer water drops

c.The ice crystals con0ert into ater drops

$$3.

The clouds hose tops etend ell a"o0e the !ree?ing le0el are called

a.

arm Clouds

b.

)o#d )#ouds

c.2oderate Clouds $$.

The clouds hose tops do not etend to the !ree?ing le0el are called

a.

arm )#ouds

".

Cold Clouds

c.2oderate Clouds

$$5.

Coalescence Theory eplains occurrence o! rain!all !rom the

a.

arm )#ouds

".

Cold Clouds

c.
$+'.

Ice crystal Theory eplains occurrence o! rain!all !rom the

a.

arm Clouds

b.

)o#d )#ouds

c.
$+1. a.

8iant Nucleus Theory eplains occurrence o! rain!all o0er /aritime areas Page +3

Page +

".

Inland areas

c.%illy areas

$+$.

-ery hea0y precipitation as shoers o0er a short period is called

a.

Blash @oods

b.

)#oud 2urst

c.6rographic Rain $++.

Rain shado area is on the

a.

Top

".

indard side

c.

Leeward side

$+*.

o! the mountain range

#leet is a miture o!

a.

%all M #no

b.

;ai > $ow

c.Bro?en Rain

$+,.

Rain!all in the tropics is more in

a.

inters

b.

$ummers

c.Post monsoon

$+.

Rain!all in the tropics is more in the

a.

2orning

".

4fteroo

c.Night

$+3.

Rain!all in the temperate latitudes is more in

a.

iters

".

#ummers

c.#pring

$+.

60er OMJ and estern %imalayas Rain!all is more in Page +

Page +5

a.

iters

".

#ummers

c.Post monsoon

$+5.

Rain!all o0er coastal areas is more in the

a.

70ening

". c.

/!ternoon ight > ear#3 morig

$*'.

/reas to the

a.



".

#

c.

E

$*1.

o! estern 8hats o! India are rain shado areas

/ sudden rise in the le0el o! ri0ers or streams causing @oods is called

a.

Cloud
".

Catchments @ooding

c.

=#ash =#oods

$*$.

/rticial rain ma)ing is also termed as

a.

#imulation

b.

)#oud seedig

c.Nucleation

$*+.

Bog can "e dispersed !or a short period "y articial stimulation

a.

True

".

Balse

$**.

#hoery precipitation occurs !rom

a.

N#

".

/C

c.

)2

$*,.

/ day is called Rainy day hen rain!all in $* hr is ....mm or more Page +5

Page *'

a.

'.',

b.

1

c.$

ICE ACCRETION

$*.

%oar !rost occurs on air!rame in clear air hen the temperature o! air!rame is

a.

be#ow the frost poit

".

!rost point

c.Uust a"o0e the !rost point

$*3.

In clouds at temperatures "elo '9 C an aircra!t may encounter icing o! the type

a.

only 8la?ed

".

only Rime

c.

itermediate betwee these two

$*.

6pa&ue Rime ice is

a.

Light porous

".

#olid

c.2iture o! porous and solid

$*5.

Rime is !ormed "y !ree?ing o!

supercooled ater droplets on air!rame hen

aircra!t is @ying through clouds a.

$ma##

".

Large

c.2edium

$,'.

The

ice poses serious a0iation ha?ard

a.

Rime

b.

Hoar =rost

c.8la?ed

Page *'

Page *1

$,1.

/ir!rame icing occurs "elo '9C. Its pro"a"ility o! occurrence decreases

progressi0ely "elo ($' 9C= as at loer temperatures the proportion o! supercooled ater drops in a cloud a.

Increases

".

Decreases

c.


$,$.

CI= C# and CC clouds consist mostly ice crystals. Icing ha?ard is there!ore

a.

2aimum

b.

/edium

c.Negligi"le

$,+.

/#= N# consist o! supercooled ater drops and ice crystals in 0arying proportion icing is possi"le.

a.

2aimum

".

Light or moderate

c.

eg#igib#e

$,*.

In /C clouds ;;;;.. icing is li)ely in mountainous areas

a.

#e0ere

b.

Light to moderate

c.Negligi"le

$,,.

In TC4 icing may range !rom light to se0ere type at.least up to

a.

( *' 9C le0el

".

+' 9C le0el

c.

- 0 &) #ee#

$,.

le0el.

In C< icing may range !rom light to se0ere type up to ($'9C le0el.
temperature se0ere icing is a.

ot sigicat

".

signicant

c.maimum

Page *1

Page *$

$,3.

Li&uid ater content is an important !actor in icing. /s the maimum ater

concentration is around = maimum ice !ormation in clouds may also "e epected around that le0el. a.

($,9 C le0el

".

($'9 C le0el

c.

-1(& ) #ee#

$,.

Car"uretor icing occurs hen air !rom inta)e passes through a 0entury Echo)eF and

causes epansional cooling and 0apori?ation o! !uel. #erious icing can occur at etreme temperatures a.

1+9C

b.

+0&) to -10&)

c.$' 9C

$,5.

occurs in a moist cloudless air on an aircra!t sur!ace ha0ing temp= "elo '9 C= due

to su"limation o! ater 0apour onto !eathery ice crystals. a. ".

Rime 8la?ed

c.

Hoar =rost

$'.

occurs in #t= #c= /c= Cu= Ns at temperature (1' to (*'9 C and in C" at temperature

($' to (*'9C a.

;ime

".

8la?ed

c.%oar Brost

$1.

In clouds ;;;; occurs hen a ide range o! ater drop si?es are present at

temperatures "eteen '9 C and (*'9 C a.

Rime

".

8la?ed

c.

/iture of rime ad c#ear ice

$$.

occurs in /#= N#= #C and toering C4 or C< "eteen '9 C and ($'9 C= in arm !ront

"elo '9 C= especially i! the aircra!t has rapidly descended !rom a colder region a.

!#aFed

".

Bume Page *$

Page *+

c.2iture o! Rime and Clear ice

$+.

hen !og !ree?es on par)ed aircra!t it produces..=

a.

Hoar =rost

".

%oar Brost

c.Clear ice

$*.

Icing

the stalling speed apprecia"ly

a.

Decreases

b.

'creases

c.Does not increaseGdecrease

!UESTIONS ON THUNDERSTORM

$,.

The condition necessary !or the !ormation o! a thunderstorm are:

a.

#teep lapse rate= strong inds

".

shallo lapse rate= ade&uate supply o! moisture

c.

$teps #apse rate 9adequate supp#3 of moisture ad trigger actio.

$.

%ail is most li)ely to !all !rom a cloud

a.

%a0ing layers

".

Composed o! Ice crystals

c.

Haig strog ertica# dee#opmet

$3.

Nor esters are

a.

The estern distur"ances hich aAect N India

b.

$eere thuderstorms which occur oer E 'dia durig hot weather periot

c.#e0ere thunderstorms hich occur o0er Peninsula during hot eather perioc

$.

Duststorm usually occurs o0er N India during

a.

Post(monsoon

".

inter

c.

re-/osoo Page *+

Page **

$5.

/ KmatureK thunderstorm has

a.

/ strong updra!t only

".

#trong dondra!t only

c.

$trog updrafts ad dowdrafts

$3'.

/ircra!t icing is most !a0oured in the cloud hich ha0e temperatures ranging

"eteen a.

( $'9 C and ( *'9 C

b.

0& ) ad - 0& ) c.

$31.

"elo (*' 9 C

/ short duration= shoery precipitation is associated ith

a.

#T

".

/#

c.

)2

$3$. a.

%ail is #olid precipitation hich commonly occurs o0er the mountainous regions during inter.

".

Bro?en or partly !ro?en rain !alling !rom sheet type o! clouds

c.

$o#id precipitatio fa##ig from a deep coectie c#oud

$3+.

The most ha?ardous cloud !or a0iation is

a.

)2

".

C4

c.N#

$3*.

The li!e o! a C" cell is usually

a.

3tohrs

".

+to*hrs

c.1: - 1 hr

$3,. a.

8enerally the se0erest acti0ity o! a C< clouds is !or $hrs Page **

Page *,

b.

+0 to %( mi

c.+ to * hr

$3.

Noresters occur during

a.

Oan(Be"

b.

/ar-/a3

c.Oune(#ep d. 6ct(Dec

$33.

Noresters occur during

a.

inter

b.

Hot weather

c.2onsoon d.

$3.

Post 2onsoon

Noresters aAect

a.

NIndia

b.

2ega#9 2ihar9 @rissa ad 4ssam

c.Central India

$35.

The trigger action may ta)e place due ro

a.

Clear night s)y no ind

b.

@rographic #iftig

c.Di0ergence due to high pressure

$'.

Noresters normally occur during

a.

2ornings

b.

4fteroos

c.Nights

$1.

Noresters originates o0er

a.

)hota-agpur hi##s

".

Deccan Plato Page *,

Page *

c.Jhasi hills

$$.

/ndhi E"linding stormsF occur generally o0er

a.

#India

b.

'dia

c.N7 India

$+.

ind speed in Light D# is

a.

$,)r

".

+')t

c.

up to 1 kt

$*.

The diametre o! 2icro"urst is

a.

#ess tha % km

".

less than $ )m

c.less than  )m

$,.

The diametre o! and 2acro"urst

a.

*)m

b.

% km or more

c.S  )m

$.

Bor detecting precipitation a Radar a0elength in the range ... is suita"le

a.

+0 to 00 mm

".

*''(,'' mm

c.''(3'' mm

$3.

Bor air"orne radars a0elength generally used

a.

$'mm

".

*'mm

c.

60mm

$. a.

The a0elength o! T# detection V "and radar is 1'mm Page *

Page *3

".

$'mm

c.

+0mm

$5.

The a0elength o! storm detection # "and radar is

a.

,'mm

b.

100ram

c.$'' mm $5'.

60er plains T# mostly occur during the

a.

afteroo

".

night

c.early morning

$51.

60er 0alley and !oot hills T# generally occur during

a.

a!ternoon

b.

ight > ear#3 morig

$5$.

60er the sea T# are more !re&uent

a.

a!ternoon

b.

ight

c.early morning

$5+.

The li!e o! 2esoscale Con0ecti0e Comple T# is

a.

$(+hr

".

+(*hr

c.

6to%hr

$5*.

Loud peals o! thunder= !re&uent @ashes o! lightning= moderate or hea0y shoers

accompanied "y light hail ith maimum ind speed 1,(*' )t is classied as a.

LightT#

b.

/oderate T$

c.#e0ere T#

$5,.

Bor a se0ere T# one o! the re&uirements is strong ind shear Page *3

Page *

a.

%ori?ontal

b.

Vertica#

c.#lant

$5. a.

#e0ere T# cells are tilted i ertica#

". to the #outh c.to the North

!UESTIONS ON AIR MASSES" #RONTS AND $ESTERN DISTUR%ANCES

$53.

The air mass hich originates at sea in lo Latitudes is called

a.

o#ar maritime

".

Tropical continental

c.Tropical maritime

$5.

The air mass hich originates o0er e&uatorial region is

a.

arm M dry

b.

arm > /oist

c.Cold M dry

$55.

I! the ad0ancing cold !ront is colder than the cool air mass o! the arm !ront= the

ad0ancing cold !ront undercuts and li!ts "oth thearm and cool air masses o! the arm !ront. This is a.

arm @cc#usio

".

Cold 6cclusion

+''.

The airmass hich originated o0er land area located in polar region:

a.

arm M dry

".

arm M 2oist

c.

)o#d > dr3

+'1.

I! a arm airmass o0erta)es a cold air mass= it is called Page *

Page *5

a.

Cold Bront

b.

arm =rot

c.6ccluded Bront

+'$.

/t arm !ront

a.

arm air oertakes the co#d air

".

Cold air undercuts the arm air

+'+.

The conditions are alays unsta"le at

a.

)o#d frot

".

arm !ront

+'*.

Line s&uall occurs a"out 1''(+'' )m ahead o!

a.

arm !ront

b.

)o#d frot

+',.

Precipitation occurs o0er a "elt o! +' ( ,' )m on "oth side o! !ront

a.

)o#d frot

".

arm !ront

+'.

Cold !ront mo0es at ... the speed o! a arm !ront mo0es

a.

#ame

b.


c.%al!

+'3.

Line #&ualls occur

a.

4head

".


o! Cold !ront

c./t the

+'.

Bronts are associated ith

a.

Tropical cyclone

".

2onsoon Depression

c.

Etra-tropica# )3c#oes Page *5

Page ,'

+'5.

C<= Roll(type clouds= #C= /C ith em"edded C< are associated

a.

)o#d frot

".

arm !ront

+1'.

The #ur!ace o! discontinuity "eteen the Polar 7asterlies and the temperate

esterlies is called a.

7&uatorial Bront

".

Tropopause

c.

o#ar =rot

+11.

The air mass hich origirSates !rom sea area located in loer Lat is

a.

arm M Dry

".

arm M 2oist

c.

)o#d > /oist

+1$.

Ds approach India as

a.

Cols

b.

@cc#uded =rots

c.%ighs

+1+.

2aimum Ds occur in

a.

#ummers

".

Post 2onsoon

c.

iters

+1*.

/head o! a arm !ront the sur!ace ind

a.


".

-eers M strengthens

c.

2acks > stregthes

+1,. a.

6n approach o! a arm Bront temperature Ball Page ,'

Page ,1

b.

;ise

c.Remain same

+1.

CI= C#= /#= N#= #T in se&uence are associated ith the !ront

a.

arm

".

Cold

c.6ccluded +13.

During the passage o! a Cold Bront inds

a.

$udde#3 become squa##3

".


c.-eer and are o! moderate strength

+1.

-isi"ility is poor in a arm Bront

a.

/head

".

4head >
c./!ter M During

+15.

Bog occurs in Cold Bront

a.

/head

".

During

c.

4fter

+$'.

D is a;;;.. !ront

a.

)o#d

".

arm

c.6ccluded

+$1.

BWR/ and BWB8 occur

a.

4head

".

During

o! a arm !ront

c./!ter

Page ,1

Page ,$

+$$.

Precipitation ceases a!ter the passage o! a !ront

a.

Cold

b.

arm

c.6ccluded

+$+. a. ".

During the approach o! a arm Bront ind 2acks -eers

c.Does not change

+$*.

hene0er the lo o! a D has to or more closed iso"ars= at $ hPa inter0al= it is

termed as a.

Troughs in esterlies

b.

ester
c.estern Cyclone

JET STREAMS

+$,.

The ar"itrary loer limit o! Uet core 0elocity has "een assigned "y 26 as

a.

60kt

".

'mGs

c.3' mGs

+$.

Oet stream has

a.

one maima

b.

oe or more maima

c.only to maima

+$3.

The 0ertical ind shear in a Oet stream is a"out

a.

(m:s:km

".

mGsG)m

c.mGsG)m

+$.

Compared to hori?ontal ind shear the 0ertical ind shear in a Oet stream is Page ,$

Page ,+

a.

ea)er

b.

stroger

c.same

+$5.

In a Uet stream= the path o! the maimum speed is )non as

a.

Core

b. 4is c.Oet strea)

++'.

The ind speed along the ais o! a Uet stream is alays

a.

4ni!orm

b.

ot uiform

++1.

/long the ais o! a Uet stream there are centres o! high speed inds= these are

called a. ".

Get streaks Core

c./is

++$.

In a a0y Uet the Oet strea)s are located o0er or near the

a.

;idge

".

Trough

c.
+++.

#u"(tropical Oet #tream E#TOF is

a.

ester#3

".

7asterly

c.#outherly

++*.

The normal position o! #u"(tropical Oet #tream is

a.

+'9N

b.

&

c.+,9 N

Page ,+

Page ,*

++,.

The southern most position o! #TO is in Be"ruary is

a.

$$9N

b.

0&

c.19 N

++. a. b.

The #TO aAects India !rom Ounto Oul @ct to /a3

c./ug to #ep

++3.

#TO has a layered structure. There are o!ten to layers o! maimum ind to the...o!

Uet core a.

$

".

N

c.#

++.

The #TO strengthens

a.

Northards

".

4pstream

c.


++5.

/t and near the #TO the temperature gradient is 0ery

a.

$ma##

".

Large

c.2oderate

+*'.

-ertical ind shear in #TO is greater

a.

aboe

".

"elo

the core

c.along

+*1.

The TO pre0ails o0er the Indian Peninsula !rom

a.

2ay to Oun

".

#ep to 6ct Page ,*

Page ,,

c.

+*$.

Gu to 4ug

The TO is located o0er the Indian Peninsula= approimately at

a.

1+&

".

139N

c.19 N

+*+.

The TO is located o0er Indian= approimately at a height o![Type an anser here.]

a.

1( -16 km

".

1$(1+)m

c. 11 ( 1$ )m

+**.

The TO is strongest in

a.

Gu#3 - 4ug

".

#ep (6ct

c.Oune

+*,.

In the TO the ind shears are much

a.

more

b.

#ess

than the #TO

c. same

+*.

TOis

a.

esterly

b.

Easter#3

c. #outherly

Page ,,

Page ,

CLEAR AIR TUR%ULENCE AND MOUNTAIN $AVES

+*3.

Bor mountain a0es to !orm there should "e @o o! air across the ridge= generally

ithin ;;;;;o! the perpendicular to the ridge. a.

+0&

".

*,9

c. '9 +*.

Bor mountain a0es to !orm the ind speed !or small mountains should "e atleast

a.

1,mGs

".

1'mGs

c.

m:s

+*5.

Bor mountain a0es to !orm the ind speed !or large mountains should "e atleast

a.

1(m:s

".

1'mGs

c. 3mGs

+,'.

Bor mountain a0es to !orm the atmosphere should "e up to the ridge= here air

stream stri)es the ridge. a.

4nsta"le

b.

$tab#e

c.IndiAerent

+,1. Bor mountain a0es to !orm the atmosphere should "e at higher le0els a"o0e the ridge a.

"stab#e

".

#ta"le

c. IndiAerent

+,$.

In 2ountain a0es the Rotor clouds !orm in

a.

Troughs

b.

;idges

c. -alley Page ,

Page ,3

+,+.

Clear air tur"ulence is o!ten encountered

a.

/t the "oundary o! a Uet stream

".

In the a)e o! a passing airplane

c.In the a)e o! a larger airplane at ta)e oA and landing d.

4## of the aboe

+,*. 2ost C/T occurs on the o! a Uet stream and in the 0icinity o! upper le0el !rontal ?ones here temperature contrasts are strong. a.

=riges

".

ithin the core

c. /is

+,,.

C/T is the "umpiness eperienced "y aircra!t at high altitudes in either cloud(!ree

conditions or in strati!orm clouds a.

aboe 189000 feet

".

"elo 1=''' !eet

c. "elo $=''' !eet

+,.

hen approaching an area here mountain a0es ha0e "een reported= a pilot

should epect: a.

Possi"le presence o! roll clouds and lenticular clouds

".

Intense up dra!ts and don dra!ts on the lee side o! the mountains

c.2oderate to se0ere tur"ulence as !ar as $' to +' miles !rom the range on lee side d.

4## of the aboe

Page ,3

Page ,

TROPICAL SYSTEMS +,3.

ind speed in a tropicaO se0ere cyclone is:

a.

$3(++)t

b.

%8 - 6+ kt

c. 13($3 )t

+,.

Bronts are characteristic o!:

a.

Tropical cyclone

b.

Etra-tropica# depressios

c.2onsoon depressions

+,5.

During re(cur0ature maimum eather in a monsoon depression occurs in

a.

#7 sector

".

N sector

c.# sector d.

+'.

N7sector

6n hate0er compass course the cyclone is approached= strong inds !rom the port

indicate that the centre lies somehere a.

/head

".


c. Port d.

+1.

#tar"oard

The ell de0eloped etra tropical cyclonic storm is composed o! to main !rontal

systems and an occluded !ront= hich 0aries in etent: a.

/ stationary Bront !olloed "y a arm !ront

".

/ lo ith a arm !ront radiating out #outhards !olloed "y a cold !ront.

c./ arm !ront and an occluded !ront d.

+$.

None o! the a"o0e

The eather epected in a ell de0eloped cyclonic storm is: Page ,

Page ,5

a.

2oderate eather

".

#tormy eather

c. Clear s)ies d.

++. a. ".

+*. a. ".

+,.

No ind or temperature change

Cyclone alays approach land areas "e!ore they die True Balse

The;;;.. is the most dangerous part o! the cyclone is eyeall eye

No C# !orm

a.

/tPoles

".

/t 7&uator

c. /t Lat *' deg

+.

Li!e cycle o! a tropical cyclone in India is

a.

$(+Days

".

1'Days

c. (3 Days

+3.

C# in Indian region are less intense "ecause

a.

They ha0e a 0ery short tra0el o0er the sea

".

#ea sur!ace temp= are not high

c.India is close to 7&uator

+.

C# in India are mostly o! intensity

a.

#e0ere

".

-ery ea)

c.2oderate

+5.

7ye o! a C# is surrounded "y Page ,5

Page '

a.

#hel! Clouds

".

all Clouds

c. Rotor Clouds

+3'. a.

#urge is sudden strengthening o! ind in the ...air mass #ame

". DiAerent c.
CLIMATOLO&Y O# INDIA

+31.

During inters

a.

/d0ection !og occurs o0er northern M central part o! India

".

Radiation !og occurs in southern part o! country

c.

4ctiit3 of ;adiatio fog icreases after the passage of a < oer  'dia

+3$.

Lo Temperatures and lo humidity is the characteristic o!

a.

Post 2onsoon

b.

Hot weather

c. 2onsoon d.

+3+.

inter months

%ot eather period is

a.

Oan(Be"

b.

/ar-/a3

c. Oun(#ept d.

+3*.

6ct(Dec

During hot eather

a.

 ;aIastha

".

No D aAect N(parts o! country

c.Trac) o! D is southern most Page '

Page 1

+3,.

The monsoon current o0er the est coast o! India is

a.

$#3

".

#7ly

c. N7ly

+3.

2onsoon period is

a. ".

Oan to Be" 2arch to 2ay

c.

Gue to $ep

d.

6ct to Dec

+33.

The monsoon ad0ances ith

a.


".

/ra"ian #ea current only

c.

2a3 of 2ega# ad 4rabia sea currets

+3.

The rain!all o0er India during monsoon depends on

a.

Lo o0er Pa)istan

".

Depression o0er
c.The positio of the ais of /osoo Trough

+35.

Rain!all occurs all o0er the country during monsoon hen

a.

4is of /T is i its orma# positio a#og !agetic p#ais

".

/is o! 2T is along %imalayas

c.Depression has !ormed o(er
+'.


a.

/is o! monsoon trough is along 8angetic plains

b.

4is of mosoo trough is a#og foot hi##s of Hima#a3as

c.Depression o0er
+1.

ith a depression o0er the head
a.

4ssam

".


Page $

c. 6rissa

+$.

2onsoon is also called

a.

N7 monsoon

b.

$ mosoo

c. #7 monsoon

++.

Post monsoon eather period re

a.

2arto2ay

".

Oun to #ept

c.

@ct to o

d.

Oan to Be"

+*.

During post monsoon= pressure gradient o0er India is

a.

weak

".

steep

c.same as inters

+,.

During monsoon period= lo pressure lies o0er

a.


".

N7India

c. Central India d.

+.

akista

During 0igorous monsoon period the pressure gradient o0er est coast is

a.

ea)

b.

$teep

c.Normal

+3.

/n aircra!t @ying in 2onsoon season !rom Chennai to Jol)ata at 1* )m ill

eperience inds a.

Easter#3

".

esterly

c.Nly Page $

Page +

d.

+.

#outherly

/n aircra!t @ying in inter season !rom Chennai to Jol)ata at 1$ )m ill eperience

inds a.

7ly

b.

#3

c.Nly d.

+5.

#ly

/n aircra!t @ying in Pre monsoon season !rom Delhi to Jol)ata at 1' )m ill

eperience inds a.

7asterly

".

ester#3

c. Northerly d.

+5'.

#outherly

/n aircra!t @ying in 2onsoon season !rom 2um"ai to /hmeda"ad at '+ )m ill

eperience inds a.

#7ly

b.

$'3

c. Nly d.

+51.

Nly

/n aircra!t @ying in inter season !rom Delhi to Jol)ata at ' )m ill eperience

inds a.

#7ly

".

#Iy

c. Nly d.

+5$.

-#3

/n aircra!t @ying in inter season !rom Delhi to Jol)ata at ' )m ill eperience

a.

ort drift

".

#tar"oard dri!t

c. Tail ind d.

%eadin Page +

Page *

+5+.

/n aircra!t @ying in inter season !rom Jol)ata to Nagpur at '$ )m ill eperience

a.

ort drift

".

#tar"oard dri!t

c. Tail ind d.

+5*. a. ".

%ead ind

During "rea) monsoon the pressures all o0er the country ;ise Ball

c. Do not change

+5,.

During "rea) monsoon sometimes the sur!ace inds o0er 7ast 4P and
a. ".

er3 strog ea)

c.normal

+5.

2id tropospheric cyclone occurs during

a.

Pre monsoon

".

inters

c. Post monsoon d.

+53.

$ mosoo

2id tropospheric cyclone during monsoon !orm o0er

a.

6rissa

".

PunUa"

c.

!uIarat

d.

Chennai

+5.

7l Nino episode is applied "y shermen to a period o! reduced sh catch due to

suppression o! upelling a.

warm surface coasta# curret

".

ly sur!ace coastal current

c.Cold sur!ace coastal current

Page *

Page ,

+55.

2aimum cyclones

a.

Pre monsoon

".

inters

c.

ost mosoo

d.

# monsoon

*''. a. ".

occur o0er India in

Tropical Oet stream occurs in India during Pre monsoon inters

c. Post monsoon d.

*'1.

$ mosoo

Pressure gradient o0er est Coast o! India is steep during

a.

Pre monsoon

".

inters

c. Post monsoon d.

*'$.

$ mosoo

During "rea) in monsoon rain occurs

a.

a#og foot hi##s

".

NIndia

c.# India

&ENERAL CIRCULATION

*'+.

The pole ards mo0ing air piles up in the su"tropical regions and !orms high

pressure "elt at the sur!ace= called a.

$ubtropica# high

".

Polar %igh

c. 7&uatorial high

*'*. a. ".

occurs o0er su"tropical high ad0ection con0ection Page ,

Page 

c.

*',.

subsidece

The occurrence o! large deserts near +'N and +', are due to large scale

a.

subsidece

".

con0ection

c.ad0ection

*'.

/ part o! the sin)ing air o0er the su"tropical highs @os toards the e&uator=

turning est Ein the northern hemisphereF due to the Coriolis !orce. This sur!ace air is called a.

Trade inds

".

Roaring !orties

c.


*'3.

The huge 0ertical circulations= one "eteen the e&uator and + 6N and another

"eteen e&uator and +'#= are called a.

Had#e3 )e##s

".

Berrel Cells

c. Polar cells

*'.

The descending "ranch o! the %adley cell mar)ed "y calm inds and high pressure

at the sur!ace are called a.

Tropical Latitudes

".

2iddle latitudes

c.

Horse Latitudes

*'5.

The inds in the upper troposphere are esterly. These are )non as

a.

Natural esterlies

".

#teady esterlies

c.

Joa# ester#ies

*1'.

In the e&uatorial regions the upper tropospheric inds are

a.

esterlies

b.

Easter#ies

c.Wonal esterlies Page 

Page 3

*11.

The distur"ances o! middle latitudes mo0e !rom

a.

toE

".

7to

c. N to # d.

*1$. a.

#toN

The tropical distur"ances hich !orm in the e&uatorial lo pressure "elt mo0e in a 7asterly direction

b.

ester#3 directio

c. #outherly direction

*1+.

Tropical distur"ance hich reach the ?one o! transition in the upper le0el @o

change course and "egin to mo0e in a a.

Perpendicular direction

b.

@pposite directio

c. #outhards *1*.

Latitudinally= on the a0erage there is radiation

in the tropics than in the polar

regions a.

surp#us

".

Decit

c."alance

*1,.

The systems li)e highs= los= cyclonic circulation etc are associated ith distinct

types o! eather. / study o! the "eha0iour o! these systems= )non as a.

$3optic /eteoro#og3

".

Climatology

c. Physical 2eteorology

*1.

Rising air creates calms or doldrums in the e&uatorial region.

a.

ITCW

".

%orse Latitudes

c.

Equatoria#
*13.

#teady N7 inds in the N hemisphere and #7 inds in the # hemisphere are called. Page 3

Page 

a.

7asterly inds

b.

Trade ids

c. Tropical inds

METEOROLO&ICAL SERVICES #OR AVIATION

*1. Bor non(scheduled National Blights an ad0ance notice E"e!ore 7TDF is re&uired to "e gi0en to Class I 2et 6ces a.

+hr

".

1($*hr

c. hr

*15.

Bor non(scheduled National Blights ad0ance notice an ad0ance notice E"e!ore 7TDF

is re&uired to "e gi0en to Class III 2et 6ces a.

+hr

b.

18-% hr

c.  hr

*$'.

orld /rea Borecast #ystem pro0ides high &uality en(route !orecasts o!

to 2et

6ces a.

/et @Aces

".

en(route !orests o! inds and temperature

c.#I827T d.

*$1. a.

TR7ND

I2D has *

".

,

c.

6

*$$. a. b.

Regional 2et oces

There arc

Class I 2et 6ces

1* 1K

c. 1 Page 

Page 5

*$+.

There are

a.

*$

b.

(

Class III 2et 6ces

c. $

*$*.

In /IR7P the 2et In!ormation is contained in #ection

a. ".

1 $

c.

*$,.

+

T/B are generally 0alid !or

a.

1hr

".

1$hr

c.

*$.

Khr

The 0alidity o! Landing Borecast ETR7NDF is

a.

1hr

b.

hr

c. + hr

*$3.

Landing Borecast is append to

a.

/ET4; ad $E)'

".

T/B

c. /IR7P

*$.

Local Borecast is issued three times a day 0alid !or net

a.

1hr

b.

8hr

c. 5hr

*$5.

Local Borecast co0ers an area

a.

(0/

".

1''N2

c. 1,' N2 Page 5

Page 3'

*+'.

Prognostic Charts are issued "y

a.

;4=)

".

Class I 2et 6ces

c. 26

*+1.

Prognostic Charts are 0alid !or

a. b.

1hr 1hr

c. 5hr

*+$.

#18  Chart are issued !or Blight Le0els

a.

be#ow %60

".

*'

c. a"o0e *'

*++.

C6D/R is

a.

Radar Report

b.

"pper report from a aircraft other tha weather recoaissace aircraftM

c.Coded /RB6R

*+*.

INT72 is

a.

/ctual upper inds

b.

=orecast upper wid ad temperature

c./ctual temperature and upper inds

*+,.

#I827T is a notice o! se0ere eather !or

a.

actual

".

epected

c.

both

*+.

#I827T is issued !or aircra!t

a.

i 5ight

".

on ground Page 3'

Page 31

c."oth

*+3.

#I827T is issued "y

a.

R/BC

".

Class I 2et 6ces

c.

*+.

/@

#I827T is 0alid !or

a.

%hr

".

1hr

c.  hr

*+5.

#I827T is not issued !or

a.

;ai

".

-olcanic /sh

c. #7- Icing

**'.

/IR27T is issued "y a 26 !or the occurrence or epected occurrence o! en(route

eather phenomena= hich may aAect the sa!ety o! a.

#ow-#ee# aircraft

".

high (le0el aircra!t

c."oth

**1.

8/27T is an area !orecast in a""re0iated plain language !or

a.

high (le0el aircra!t

b.

#ow-#ee# aircraft

c. "oth

**$.

The 0alidity o! /ireld arnings is not eceeding

a.

+hr

b.

%hr

c.  hr

**+.

/ireld arning is issued !or epected ind speed Page 31

Page 3$

a.

+0kt

".

$*)t

c. 1, )t

***.

/ireld arning is issued !or ind direction o! $' )t changes "y

a.

%(&

". +'9 c. '9

**,.

/ireld arning !or gliders= light aircra!t and helicopters is issued !or epected ind

speed a.

1,)t

b.

1kt

c. +' )t

**. ind #hear arning is issued !or the o"ser0ed or epected ind shear a"o0e runay a.

up to (00 m

".

a"o0e ,'' m

c. +'' m

**3.

-6L27T is a 27T in!ormation !or aircra!t

a.

on ground

b.

i 5ight

c. "oth **.

-6L27T Radio Telephony
a.

2um"ai only

".

Jol)ata only

c.

both

**5.

-6L27T consists o!

a.

#I827T

".

T/P only Page 3$

Page 3+

c.

*,'.

T4= ad /ET4;

In R6<7V the messages echanged are 27T/RG#P7CI o! international aerodromes

and their alternates a.

ithin India

b.

outside 'dia

*,1.

#I8 eather Charts are issued .... times a day

a.

To

".

Three

c.

=our

STATION MODEL

*,$.

The direction o! sur!ace ind is

a.



".

N7

c.#7

*,+.

The range o! ind speed is

a.

$'($,)t

".

1($$)t

c.

18-kt

*,*.

The type o! medium cloud is

a.

4)

".

/#

c. /C M/#

*,,.

Lo clouds are Page 3+

Page 3*

a. ".

C4 #C

c.

*,.

$T

%igh clouds are

a.

CC

b. c. C#

)'

*,3.

%eight o! "ase o! lo clouds is

a.

$''m

".

$,'m

c.

100 to 1KKm

*,.

/mount o! loest cloud is

a.

$G

".

*G

c.

*,5.

+:8

et "ul" temperature range is

a.

K.( to +0.%& )

".

$5.1

c.+'.

*'.

to +'.*9

to +'.*9

Temperature +*9 C is

a.


".

et

c. De Point

*1.

5$ represents

a.

HB7

b.

7==

c. HN%

Page 3*

Page 3,

*$. a. b.

Pressure 0alue in hPa is 55 KK6.

c. 1'5.$

*+.

Pressure change o! 1., hPa is in

a. ".

hr +hr

c.

%hr

**.

Past eather is

a.

/oderate Light ;ai

".

Continuous Rain

c.%ea0y Rain

*,.

Rain!all amount

a.

$mm

".

1.,mm

c.

196 to .% mm

*.

is

Rain!all reported is !rom

a.

0+00 to 0+00 J

".

'1'' to $*''W

c. ',+' to '+' 1#T

*3.

#peed o! #hip is

a.

,J2%

".

,2P#

c.

(?T

*.

Direction o! mo0ement o! #hip

a.



".

#

c.N7 Page 3,

Page 3

*5.

#peed o! #hip reported is a0eraged !or

a.

+hr

".

hr

c. 1$ hr

*3'.

#ur!ace 0isi"ility is

a. ".

,'' to 1''' m 1''' to $'''m

c.

000 to C %000 m

*31.

eather reported is

a.

Rain at the time o! o"ser0ation

b.

;ai durig #ast oe hour

c.Rain not at station "ut ithin , )m

!UESTIONS ON AVIATION $EATHER REPORTS METAR SPECI AND TREND 27T/R -IDP 1'$+' +''',JT $5'-',' 1,''# '''N R1,GP1,''4
*3$. a.

The 27T/R has "een issued on

day

1,KY

b. 16th c. 13th

*3+. a. ".

The 27T/R has "een issued at '+'1#T 0+0"T)

c.'$+' 1#T

*3*.

The sur!ace ind speed is

a.

$()t

b.

+-kt Page 3

Page 33

c. *( )t

*3,.

ind direction is 0arying !rom

a.

K0 to 0(0&

".

',' to $5'9

c.$'' to ','9

*3. a. ".

-isi"ility 1,'' m is toards N $

c. /ll o0er the airport

*33. a. ".

-isi"ility toards N is 1,''m 6000 m

c. +''' m

*3.

%eight o! "ase o! lo clouds is

a.

000m

".

$,''!t

c. $,'' !t

*35.

Runay -isual range is

a.

1,''m

b.

B1(00 m

c. 1,'' m

*'.

Runay -isual range has

a.

Decreased

b.

'creased

c.Remained same

*1. a.

Present eather is Bog Page 33

Page 3

".


c.

/ist

*$.

/mount o! loest cloud is

a.

1-:8

".

$(*G

c. ,(3G *+.

/mount o! C< cloud is

a.

1-:8

".

$(*G

c. ,(3G

**.

%eight o! "ase o! C< is

a.

$,''m

".

+'''!t

c.

(00ft

*,.

The height o! topmost layer o! cloud is

a.

+'''m

".

+''''m

c.

+0000 ft

*.

The landing !orecast appended to 27T/R is 0alid !or

a.

1hr

b.

hr

c. + hr

*3.

The ind in TR7ND !rom o++' 4TC is 0alid up to ... 4TC

a.

'*''

".

'*+'

c.

0%1(

*.

7pected 0isi"ility a!ter '*1, 4TC is Page 3

Page 35

a.

'''m

".

1')m

c.

B10km

*5.

H1''+ is

a.

HB7

". c.

HBB 7H

*5'.

The diAerence "eteen TT and TdTd is ,9 C. The atmosphere is

a.

-ery Dry

b.

/oist

c. #aturated

*51.

Oust "e!ore the 27T/R as issued the eather as

a.

Rain

".

2ist

c.

=og

*5$.

The range o! pressure reported as H1''+ is

a.

1''$., to 1''+., hPa

b.

100+.0 to 100+.K ha

c.1''+.1 to 1''+., hPa

*5+.

The range o! temperature reported as +$ is

a.

+1., to +$.* 9 C

".

+$.1 to +$.* 9 C

c.

+1.( to +.% & )

*5*.

-isi"ility is reported in steps o! ,' m hen 0isi"ility is

a.

'' m to ,''' m

b.

0 to 800 m

c. ,''' m to 1' )m

Page 35

Page '

*5,.

-isi"ility is reported in steps o! 1'' m hen 0isi"ility is

a.

800 m to (000 m

".

'to''m

c. ,''' m to 1' )m

*5.

-isi"ility is reported in steps o! 1''' m hen 0isi"ility is

a. ".

'' m to ,''' m 'to''m

c.

(000 m to KKKK

*53.

-isi"ility is reported 5555 hen 0isi"ility is

a.

'' m to ,''' m

".

5''' to 5555 m

c.

10 km or more

*5.

Temperature X $.,9C reported as

a.

$9C

b.

+&)

c.$.,9C

*55.

Temperature ( 1 $.,9C reported as

a.

(1$

".

(1+

c. /$ 1

,''.

Pressure is rounded don to the nearest

a.

eact 0alue

".

upper 0alue

c.

#ower a#ue

,'1.

HN% 1''$. hPa is reported as

a.

7100

".

H1''+

c. H1''$. Page '

Page 1

,'$.

HN% $5(5$ inches is reported as

a.

H$5''

b.

4KK

c. / +'''

,'+. a. ". c. S

,'*.

Bog is reported hen 0isi"ility is C 1 000m 1'''m 1''' m

2ist is reported hen 0isi"ility is

a.

 1''' m to $'''m

b.

1000 to (000m

c. S1''' m

,',. C/-6J signies -isi"ility= Cloud 0alues or conditions a.

)ei#ig

".

"ase

and present eather "etter than the prescri"ed

c.amount

,'.

C/-6J is issued hen 0isi"ility is

a.

5(1')m

b.

10 km or more

c.1' )m only

,'3.

C/-6J is issued hen EiF -isi"ility 1' )m or more EiiF No eather o! signicance

EiiiFNo clouds "elo 1,'' m or "elo the highest minimum sector altitude= hich e0er is greater and no cumulonim"us. a.

/ny one condition

".

/ny to conditions

c.

4## the three coditios

Page 1

Page $

,'.

#P7CI is issued hen EiF Change in ind direction "y S '9 and speed "e!ore andG

a!ter change is S 1' )t. EiiF 2ean speed has changed "y S 1' )t EiiiF -ariation !rom mean speed "y S 1' )t and speed "e!ore andG a!ter change S a.

/ny to conditions

b.

43 oe coditio

1, )t

c./ny one condition

,'5.

#P7CI is issued hen Clouds are EiF
Cloud amount "elo *,' m changes: Brom

#JCG B7G #CT to

43 oe coditio

".

/ny to conditions

c./ll the three conditions

,1'.

#P7CI is issued !or 0ertical 0isi"ility= "y stations ha0ing Ceilograph= hen s)y is

o"scured a. ".

,11.

True Balse

#P7CI is issued hen sur!ace temperature has increased "y

or more !rom the last

o"ser0ation. a.

+9C

".

*9C

c.

&)

H47#TI6N# 6N T/B T/B -ILJ $*1''W $,'''5 '5''#JT ''' 78 <7C28 '*', '5'1,JT ''' #CT''
,1$.

The T/B has "een issued on

a.

$+rd

".

1lh

c.

%th

day

Page $

Page +

,1+.

The T/B has "een issued at

a.

++0 1$T

".

1+'4TC

c.$* 4TC

,1*.

The epected sur!ace ind speed is

a. ".

'5)t ')t

c.

08kt

,1,.

Initially epected ind direction is

a.

1$'9

b.

0K0&

c. ','9

,1.

T/P is -alid !or Date

a.

$+rd

".

$*KY

c.

(th

,13.

Loest !orecast 0isi"ility in T/P is

a.

1,''m

".

0800 m

c. '$'' m

,1. a.

%eight o! "ase o! loest clouds in T/P is 1'''m

".

1'''!t

c.

0800ft

,15.

eather T#R/ is epected a!ter

a.

0600 "T)

".

'''1#T

c.''' 4TC Page +

Page *

,$'.

Direction o! gusty ind is

a.

'5'9

".

1''9

c.

10&

,$1.

7pected eather up to '*''4TC is

a. ".

=og T#R/

c.2ist

,$$.

/mount o! loest cloud is

a.

1($G

b.

+-%:8

c.,(3G

,$+.

/mount o! C< cloud is

a.

1-:8

".

$(*G

c.,(3G

,$*.

%eight o! "ase o! C< is

a.

(00ft

".

+'''m

c.$,'' m

,$,.

The height o! topmost layer o! cloud is

a.

$''m

".

$'''m

c.

8000 ft

,$.

Period o! 0alidity o! T/P is

a.

$+ to '' 1#T

b.

18 to 00 "T)

c. $' to 1$ 4TC Page *

Page ,

H47#TI6N# 6N R6B6R R6B6R '1''''W '1'1' JT -7CC -ILJ $#C'+' $C<'+' +/C1'' $CI+'' 3GGG13' $1'' ,*1,'1 *','$$ $'1, *'3'1' $'$' *1''', $5'+' *$'2', $3'*, **'2*1 $31', 11111 1$3' +'1$' $$$$$ +1*' $$,Q

,$3.

Time o! issue o! R6B6R is

a.

'1'4TC

".

''''1#T

c.

0000"T)

,$.

Period o! 0alidity o! R6B6R is

a.

'''' to '''' 1#T

".

''' to '1'' 1#T

c.

0600 to 1 000 "T)

,$5. a. ".

ind speed in R6B6R is in ?T 2P#

c. J2%

,+'.


a.

+''m

".

+''!t

c.

+000ft

,+1.

%eight o! Bree?ing le0el Page ,

Page 

a.

13''m

b.

19000 ft

c. 1.3 )m

,+$. a.

Icing group in the R6B6R is 3GGG13'

b. 61800 c. ,*GG'5

,++.

Type o! Icing

a.

Nil

".

Light

c.

Light icig i c#oud

,+*. a.

Indicator gure !or tur"ulence group in the R6B6R is 3

".



c.

(

,+,.

%eight at hich Icing is epected

a.

$1=''' !t

".

189000 m

c. 1,=''' !t

,+.

Thic)ness o! Icing is epected to "e

a.

+''m

".

''m

c.F "p to )#oud Top

,+3. a. ".

%eight at hich Tur"ulence is epected 1(9000 ft ,='''!t

c. 1$=''' !t

Page 

Page 3

,+.

Thic)ness o! tur"ulence epected is

a.

$'''!t

b.

+00m

c. 4p to Top o! cloud

,+5. a. b.

ind at ,''' !t epected is $'G1' )t 80:1( kt

c. $'G$' )t

,*'.

ind at $'''' !t epected is

a.

0:%( kt

".

$3'G*, J2%

c. $3'G*' )t

,*1.

Temperature at $'''' !t epected is

a.

-0(&)

".

',9C

c. $, J

,*$.

Temperature at *'=''' !t epected is

a.

(*,9C

b.

-%1&)

c. $++ J

,*+.

Date o! issue o! !orecast is

a.

1'

b.

01

c.'$

,**.

Indicator group !or Oet stream in R6B6R is

a.

$$$$$

b.

11111

c. 111111 Page 3

Page 

,*,.

Indicator group !or 2aimum ind in R6B6R is

a.



".

11111

c. 111111

,*.

2aimum ind speed epected is

a. ".

1$')t 1+')t

c.

1%0kt

,*3.

2aimum ind speed epected at height

a.

*''''!t

b.

+6000 ft

c.+''' !t

,*.

Oet stream is epected at LatGLong

a.

$3NG3'7

".

$NG3, 7

c.

8:0E

,*5.

-ertical ind #hear per +'' m epected is

a.

(kt

".

+')t

c.+ )t

,,'.

Oet stream core speed is epected to "e

a.

1$,)t

b.

10kt

c. 1*' )t

,,1.

Oet stream is epected at a height o!

a.

*'=''' !t

".

+=''' !t

c.

+89000 ft Page 

Page 5

,,$.

ind at *'=''' !t epected is

a.

0:10( kt

".

$3'G11, J2%

c.$3'G1*' )t

Page 5