1. Which of the following following is correct correct for atmospher atmosphere? e? a. Its pressur pressure e and density decreases decreases with increasing increasing height b. Its pressure pressure and density density increases increases with increasing increasing height c. Its pressur pressure e decreases decreases and its density density increases increases with with increasing height
2. Which layer layer of atmospher atmosphere e is the lowest lowest one? a. Stra Strato tosph spher ere e b. Iones Ionesphe pherre c. Tropos roposher here e
3. Which atmospher atmosphere e layer does most of the the conventional conventional ights ta!e place in? a. Troposher roposhere e b. Strato Stratosphe sphere re c. Ione Ionesp sphe herre
". What is the height di#ere di#erence nce in troposher troposhere e caused by? a. $i#er $i#erent ent air air content contents s b. Temperature and gravity di#erences c. %entri %entrifuga fugall force force di#erence di#erence
&. Which of the following following about atmosphere atmosphere layers layers is correct? correct? a. The layer between between troposphe troposphere re and stratosph stratosphere ere is called e'osphere e'osphere b. The stratosphe stratosphere re is character characterised ised by the absence absence of weather and smooth ying conditions c. The ionospher ionosphere e consist of atomised atomised hydrogen hydrogen and helium( whereas hydrogen is predominating element
). What is the content content amount amount of nitroge nitrogen n in dry air at sea level? a. *+, b. 21* c. *1
+. Which of of the followin following g is correc correct? t? a. The higher the temperat temperature ure is the more more water vapour vapour can be retained by air b. The lower the temperat temperature ure is the more more water vapour vapour can be retained by air c. There There is no de-ned relation relation between between temperat temperature ure and water vapour
,. Which of the the following following describes describes the humidity humidity? ? a. The amount amount of temperatur temperature e enough for raining raining b. The amount amount of water water present present in the the air c. The capacity capacity to absorb absorb water water by air
. What is the relation relation between between relative relative humidity humidity and the air density? a. / high relative relative humidity humidity decreases decreases the density density of a#ected air b. 0elative humidity humidity is a ratio of density density of substance to density of water c. / high relative relative humidity humidity increases increases the density of of a#ected air
1. What dede-nes the atmosp sphe herric pre pressure ure? a. $ensity $ensity of air air over a given given area area b. Weight of air air over a given area area c. Weight eight of air times times altit altitude ude
). What is the content content amount amount of nitroge nitrogen n in dry air at sea level? a. *+, b. 21* c. *1
+. Which of of the followin following g is correc correct? t? a. The higher the temperat temperature ure is the more more water vapour vapour can be retained by air b. The lower the temperat temperature ure is the more more water vapour vapour can be retained by air c. There There is no de-ned relation relation between between temperat temperature ure and water vapour
,. Which of the the following following describes describes the humidity humidity? ? a. The amount amount of temperatur temperature e enough for raining raining b. The amount amount of water water present present in the the air c. The capacity capacity to absorb absorb water water by air
. What is the relation relation between between relative relative humidity humidity and the air density? a. / high relative relative humidity humidity decreases decreases the density density of a#ected air b. 0elative humidity humidity is a ratio of density density of substance to density of water c. / high relative relative humidity humidity increases increases the density of of a#ected air
1. What dede-nes the atmosp sphe herric pre pressure ure? a. $ensity $ensity of air air over a given given area area b. Weight of air air over a given area area c. Weight eight of air times times altit altitude ude
11. 11. What What is the refer eferen ence ce for for the the vari variat atio ions ns in atm atmosph ospher ere e at di#erent latitudes and altitudes de-ned by I%/? a. IS/ b. S4 c. IS
12. 12. Whic Which h of of the the foll follow owin ing g dede-ne nes s the the relat elatio ion n bet betwe ween en atmospheric pressure and altitude? a. /tmospher /tmospheric ic pressure pressure stays stays stable while altitude altitude changes b. /tmospher /tmospheric ic pressure pressure increases in increasing increasing altitude c. /tmospher /tmospheric ic pressure pressure decreases decreases in increasing increasing altitude altitude
13. 13. What What is tem temper peratur ature e val value ue at S4 acco accorrdi ding ng to the the IS/? a. 5% b. 1&5% c. 2&5%
1". What is is th the I%/ I%/ St Standar dard air air press ssu ure at at S S4? a. 112.2 112.2& & in h6 h6a a b. 113.2 113.2& & in h6a h6a c. 13 131 1.1 .1& & in h6a h6a
1&. What is is th the I%/ I%/ St Standar dard air air dens nsiity at at S S4? a. 1. 1.2" 2" !g7m !g7m88 b. 1 !g7d !g7dm8 m8 c. 11 13 3 g7m g7m88
1). What is the temperature gradient from S4 up to an altitude of appro'. 11 !m? a. 9).&5% per 1. feet b. 925% per 1. meter c. 9).&5% per 1. meter
1+. Which can be said for the temperature at an altitude of 1,. m? a. ore than 9&).&5% b. 4ess than 9&).&5% c. /t 9&).&5%
1,. Which of the following can be said for temperature change in atmosphere depending on the altitude? a. Temperature increases by increasing altitude b. Temperature decreases up to an altitude of 11 !m and stays stable between 11 !m and 2 !m and then starts to increase c. Temperature increases up to an altitude of 11 !m and stays stable between 11 !m and 2 !m and then starts to increase again
1. What is the appro'imate ratio of the air pressure at 11 !m to the air pressure at S4? a. : b. 17, c. 172
2. Which of the following can be said for total energy of the air? a. It increases with increasing !inetic energy b. It increases with decreasing potential energy c. It e;uals to the sum of !inetic energy and potential energy
21. If the total amount of energy stays constant( any increase in !inetic energy will cause< a. /n e;ual increase in potential energy b. /n e;ual decrease in potential energy c. The potential energy to stay constant
22. /ccording to the =ernoulli>s principle( what happens to the pressure and velocity of air in narrow part of enturi tube comparing wide part? a. ore pressure and more velocity b. ore pressure and less velocity c. 4ess pressure and more velocity
23. What is the static pressure of air caused by? a. oving air b. Still air c. oving air subtracted from still air
2". Which of the following is correct? a. /ny ob@ect in still air will e'perience an additional pressure in all directions b. /ny ob@ect in moving air will e'perience an e;ual pressure in all directions c. /ny ob@ect in moving air will e'perience an additional pressure in the direction of motion of air
2&. What happens to the dynamic pressure of air if the velocity is doubled? a. Aour times more than before b. Two times more than before c. Two times less than before
2). Which statement is wrong for airfoil? a. / symmetrical airfoil has the same curve on each side of the chord line b. Bpper side is larger than the lower in symmetrical airfoil c. Shapes of top and bottom side of an asymmetrical airfoil are di#erent
2+. Which comparison is correct for asymmetrical and symmetrical airfoils? a. When the angle of attac! is increased( center of pressure in symmetrical airfoil moves toward the leading edge but stays at the same point in asymmetrical airfoil b. When the angle of attac! is increased( center of pressure in asymmetrical airfoil moves toward the leading edge but stays at the same point in symmetrical airfoil c. When the angle of attac! is increased center of pressure moves toward the leading edge both in symmetrical and asymmetrical airfoils
2,. Aor most airfoils the ma' angle of attac! lies between< a. 1&5 9 25 b. 15 9 1&5 c. 25 9 2&5
2. Which is wrong for boundary layer? a. It is important to !eep it as thic! as possible b. /bove ma' angle of attac! total seperation of boundary layer occurs c. 0andomly owing air on the surface is called boundary layer
3. Which term may be used for all types of pro-le drag? a. Induced drag b. 6arasite drag c. Wave drag
31. What de-nes form drag? a. It is obtained when induced drag is subtracted from pressure drag b. It is the additional drag when the wing is producing lift c. It is the sum of all aerodynamic forces
32. Aorm drag can be considerably reduced by< a. Increasing lift b. Increasing // c. Streamlining
33. Which condition is called Cadverse pressure gradient>? a. Thic!ening the boundary layer further bac! along the wing b. $ecreasing of air pressure with increasing altitude c. $ecreasing of air pressure with increasing velocity in enturi tube
3". What is the main reason causing boundary layer occur? a. =ecause the velocity of air on upper surface is more than the velocity of air on lower surface b. =ecause air is viscous and it tends to stic! to the aircraft s!in
c. =ecause airfoils has a curve on upper surface and that causes the air to turbulate
3&. When the total drag of an aircraft is calculated( total drag is found to be greater than the sum of the drags of indiviuals. Dow can this di#erence be e'plained? a. Interference drag caused by @unction areas b. Aorm drag caused by sharp parts of structure c. Induced drag increased with increasing lift
3). Intereference drag can be reduced by< a. 6olishing b. Increasing the velocity c. Aairing the @unctions
3+. Why are wing tip vortices formed? a. When the altitude is too high( air is turbulenced easily due to the decreased density of air b. =ecause of pressure di#erence between upper surface and lower surface c. =ecause of the surface roughness caused by dirt( rivet etc.
3,. When the lift is increased< a. 6ressure di#erence between top and bottom surfaces decreases b. The strength of vorte' decreases c. Induced drag increases
3.
6ressure drag is sum of..
a. Aorm drag and induced drag b. Wave drag and induced drag c. 6arasite drag and wave drag
". Which is wrong about air movement? a. The air @ust ahead of the wing has an upward component( called upwash b. The movement of the air @ust behind of the wing has an downward component( called downwash c. The movement of the air @ust ahead of the wing has an downward component( called upwash
"1. / bunch of air circulating around itself at the wing tips and trailing edges is called< a. =oundary layer b. orte' c. 4aminar air ow
"2. In which parts of airfoil is stagnation line highly possible to be found? a. Bpper surface and lower surface b. 0oot and tip of airfoil c. 4eading and trailing edges of airfoil
"3. What is the relation between taper ratio and stall speed? a. When the taper is increased( the stall characteristic becomes adverse b. When the taper ratio is decreased( the stall speed decreases c. There is no relation between taper ratio and stall speed
"". Which statement is correct for -neness ratio? a. The higher the speed( the greater should be the -neness ratio b. The lower speed( the greater should be the -neness ratio c. Aineness ratio should be constant for any type of airfoil at any wor!ing speed "&. Aineness ratio of a body< a. The ratio of wing width at the wing root to wing widht at the wing tip b. The ratio of wing length to the wing width c. The ratio of length to diameter of streamlined shaped
"). What de-nes mean camber line? a. The shortest distance from leading edge to trailing edge in asymmetrical airfoils b. / line drawn in the middle between the upper and lower surfaces c. The longest height from upper surface to lower surface
"+. Which of the following is a correct statement? a. ean chord line is always straight @ust li!e mean camber line b. If the mean camber line and mean chord line are identical( the wing is symmetrical wing c. ean camber line is the shortest distance from leading edge to trailing edge in asymmetrical airfoils
",. Which statement is incorrect for mean aerodynamic chord? a. / line where all aerodynamic and gravitational forces mathematically act upon b. It is used as reference for center of gravity calculations c. It can not be used for aerodynamic calculations
". Which of the following is incorrect for center of pressure? a. %6 is the point on chord line of an airfoil at which all of aerodynamic forces are concentrated b. %6 of a subsonic airfoil is located at appro'. 39"* of the mean chord line bac! from the trailing edge in level ights c. n a symmetrical airfoil %6 doesnt move when the angle of attac! changes
&. What de-nes the angle of attac!? a. The angle between resultant force of lift and drag forces( and the chord line b. The angle between chord line and the direction of air movement c. The angle of incidence from wing root to wing tip
&1. Which of the following statements is correct? a. Wash in is a twist in the wing that increases its angle of incedence near the tip b. Wash out is a twist that decreases the angle of incidence near the wing root c. Swept bac! wings e'perience a wash in and an increase of lift at their tips
&2. Which of the following statements about forces is incorrect? a. In ight with unchanged power settings( thrust increases as weight decreases b. The amount of lift re;uired to !eep the aircraft in level ight decreases as weight decreases c. Thrust must be always bigger than drag so that the aircraft has a velocity
&3. Which statement for lift is not correct? a. 6ressure di#erence between upper and lower surfaces causes the airfoil to be lifted b. The airfoil is said to achieve *)& of the lift from lower surface and *3& from upper surface c. The sum of all lifting forces are considered to act upon an imaginary point !nown as the center of pressure
&". What happens beyond the critical angle of attac!? a. The lift coeEcient and drag coe-cient both starts to increase b. Fo lift can be produced any longer and the airfoil stalls c. While the lift reaches its pea! value( the drag coeEcient stays stable
&&. When the airspeed is doubled< a. The lift will increase by a factor of two b. The drag will decrease by a factor of two c. The lift will increase by a factor of four
&). When the angle of attac! is increased< a. The lift will decrease b. The lift will increase c. The lift will stay stable
&+. %lear ice usually a product of temperature inversions at a temperature.. a. 0ange from 5% to 91&5% b. =elow 91&5% c. In all icing conditions
&,.
Which of the following is not correct for mi'ed ice?
a. The rough rime ice crystals are covered by clear ice b. i'ed ice is a product of temperature range from 5% to 91&5% c. i'ed ice weighs more than rime ice and produces more drag than clear ice
&. Which of the icing factors inuence the type of ice formation? a. Temperature and speed b. $roplet siGe and temperature c. Speed and droplet siGe ). Which of the following is correct for icing factors? a. Ice collects more eEciently on larger airfoils b. The higher airspeed the lesser the ice build9up c. The larger water droplets the lesser the ice buildup
)1. Which force directly !eeps the aircraft in the air? a. Thrust b. Weight c. 4ift
)2. Which of the following is correct? a. 4ift can only be produced if the aircraft is moving forward b. Thrust is not needed to produce the lift( it is only for speed of aircraft c. In steady ight the lift force e;uals Gero
)3. Aor the aircraft to remain at the same altitude< a. /ll of main four forces must be e;ual to each other b. The total forward force must be e;ual to the total bac!ward force c. The total upward forces must be e;ual total to the downward forces
)". What causes the parasite drag? a. /ll aerodynamic forces b. /ll factors not producing lift c. /dverse winds
)&. What is true for steady state ight at constant altitude? a. Thrust must be higher than drag to !eep the aircraft at constant speed b. Thrust must be e;ual to the drag c. The relation between thrust and drag doesnt ma!e any di#erence for steady state ight
)). What !ind of moment does the thrust acting below the center of gravity produce? a. / nose9up moment b. / nose9down moment c. / directional moment
)+. What !ind of moment does the drag acting above the center of gravity produce? a. / nose9up moment b. / nose9down moment c. Arictional moment
),. What is the tas! of force acting on tail plane? a. =eing an aid for lift in order to overcome gravitational forces b. 6roducing and maintaining the e;uilibrium of the moments c. It decreases the e#ect of drag to improve the e#ectiveness of thrust
).
What can be said for the force on tail plane?
a. Its direction can be forward and bac!ward b. It needs to be small only because a small one is able produce a large moment c. Its purpose is to prevent any force counteracting the behaviour of the " main forces
+. Which force is not available during gliding? a. 4ift b. $rag c. Thrust
+1. Without thrust( the resultant of lift and drag must be e;ual and opposite to the weight in gliding condition. What is the corrective action to do that? a. Since there is no thrust there will no drag( then the resultant force will be e;ual and opposite to weight b. Increasing the angle of attac! will increase lift so the resultant force will be e;ual and opposite to weight c. Fose down con-guration is created in such a way that weight will be opposite to the resultant force and magnitudes will be the same
+2. Which mathematical e'pression is correct for gliding angle? a. $74 H tana b. 47$ H tana c. 47$ H sina
+3. What is the distance horiGontally ta!en by an aircraft while descending from an altitude of 1.& feet to 1. feet in gliding condition if the glide ratio is 11"?
a. 21. feet b. 1". feet c. +. feet
+". Jlide ratio is< a. The amount of loss of altitude versus distance gained b. The ratio of thrust to drag c. The amount of distance gained versus the amount of altitude gained
+&. What does the pilot need to do for level ight when the engine has some reserve of power and throttle is further opened? a. 6ushing the nose up slighly b. 6ushing the nose down slightly c. Trimming the elevator downward
+). Which of the following does not happen when the aileron on the left wing moves down in a coordinated turn? a. Induced drag caused by the left aileron pulls the nose to the left b. 4eft wing moves upward because the lift on left wing is higher than the lift on right wing c. The aircraft is rolled to the left
++. What should be done to compensate adverse yaw and to yaw bac! the nose? a. $rag on lowered wing should be increased b. elocity should be increased to increase total drag
c. The pilot should trim the rudder to the opposite direction
+,. What de-nes the load factor? a. The ratio of the lift produced by wings to total weight of aircraft b. The ratio of total weight of aircraft to the lift produced by wings c. The ratio of total load to the lift produced by wings
+. What is the load factor of an aircraft with a blan! angle of )5 ? a. 9.& g b. 1.) g c. 2 g
,. What is the load factor of an aircraft in level ight condition? a. 1 g b. 1.) g c. 2 g
,1. Which statement about load factor is correct? a. / load factor of 1 g or greater is called negative b. 4oad factor is the ratio of total weight to the lift c. $uring a stall the load factor may be reduced towards Gero
,2. Stalls that occur with g forces on an aircraft are called<
a. $isastrous stall b. 6owered stall c. /ccelerated stall
,3. The higher load factor in constant altitude turns caused by the centrifugal force will< a. =alance the stall speed b. Increase the stall speed c. $ecrease the stall speed
,". Why are high9lift devices used in combination with airfoils? a. To be able to reach higher altitudes b. To support the e;uilibrium of moments c. To reduce the ta!e9o# and landing speeds
,&. Which statement is not correct for aps? a. They increase the camber of airfoil b. They increase the ma'imum lift coeEcient c. They decrease the drag while increasing lift
,). Which type of ap slides outward and downward on rails? a. Aowler ap b. Split ap c. 6lain ap
,+. What is the advantage of slotted aps on non9slotted aps? a. They allow greater deection with smaller loss of lift b. They also increase drag while increasing lift at the same time c. They increase the stall speed by increasing angle of attac!
,,. What is the advantage of slots? a. $ecreasing stall speed b. They have a lift9increasing e#ect even at low angles of attac! c. $ecreasing lift with increasing drag
,. When are the slats selected Cin> ? a. /t low angles of attac! and cruise speed b. /t high angles of attac! and slower speeds( e.g. approach c. n ta!e9o# and landing conditions
. Which of the following lift9augmentation aps is used in modern aircraft? a. 6lain aps b. Split aps c. Aowler aps
1. Stability in pitch is called< a. 4ongitudinal stability b. 4ateral stability c. $irectional stability
2. Stability in roll is called< a. 4ongitudinal stability b. 4ateral stability c. $irectional stability
3. Stability in yaw is called< a. 4ongitudinal stability b. 4ateral stability c. $irectional stability
". /fter a disturbance aircraft nose yaws bac! into former position. What type of stability is achieved? a. 4ongitudinal stability b. 4ateral stability c. $irectional stability
&. Which a'is of an aircraft is longitudinal stability achieved about? a. 4ateral a'is b. ertical a'is c. 4ongitudinal a'is
). Which a'is of an aircraft is lateral stability achieved about? a. 4ateral a'is b. ertical a'is c. 4ongitudinal a'is
+. Which a'is of an aircraft is directional stability achieved about? a. 4ateral a'is b. ertical a'is c. 4ongitudinal a'is
,. 4ongitudinal stability is achieved by< a. DoriGontal stabiliser b. ertical stabiliser c. /ileron
. $irectional stability is achieved by< a. DoriGontal stabiliser b. ertical stabiliser c. /ileron 1. 4ateral control is provided by< a. DoriGontal stabiliser b. ertical stabiliser c. /ileron
11. / wing and its dihedral construction provide< a. $irectional stability b. 4ateral stability c. 4ongitudinal stability
12. /n aircraft>s propeller forces air to rotate around the fuselage in a cor!screw9li!e manner. This causes the air to stri!e the vertical -n and a sideways force. To prevent this yawing force< a. 4eading edge of vertical -n ofset a few degree b. 0udder is trimmed to stabilise this force c. 4eading edge ap is used to move it directly into the relative wind
13. =y whom is the static stability performed? a. 6ilot b. Technician on ground c. %onstruction
1". When the aircraft is is able to recover its original steady ight path without re;uiring correction( static stability is said to be< a. 6ositive b. Fegative c. Feutral
1&. When the aircraft( after displacement( maintains the displaced attitude( static stability is said to be< a. 6ositive b. Fegative c. Feutral
1). Which of the following is wrong about stability? a. Static stability is the production of a restorative force b. $ynamic stability refers to the oscillatory behaviour c. It is not possible to have statically stable system without being dynamically stable
1+. Bnder the e#ect of a disturbance( an airplane oscillates with divergent oscillations. What is the behavour of airplane? a. Statically and dynamically unstable b. Statically stable and dynamically unstable c. Statically and dynamically stable
1,. /t a turn in constant altitude with a ban! angle of 25 the load factor is about? a. ." g b. 1.) g c. ".& g
1. Which statement is correct for gliding condition? a. The magnitude of the lift vector is e;ual to the wieght vector but acts opposite to it b. The resultant of lift and drag acts opposite to the weight vector and the same magnitude c. The weight vector is greater than the lift and drag vector together. Therefore the aircraft descends.
11. When the %J approches to the %6 of the aircraft< a. Static stability will be increased b. The aircraft losts its control c. The stability becomes neutral
111. 0olling bac! of an aircraft without any e#ect of pilot after a disturbance is called< a. $irectional stability b. 4ateral stability c. 4ongitudinal stability
112. Which of the following wing con-guration improves the directional stability? a. / dihedral wing b. /n anhedral wing c. Swept bac! wings
113. What is the I%/ Standard atmospheric pressure e'pressed in h6a K in Dg? a. 112.2& in h6a K 2,.2 in Dg b. 113.2& in h6a K 2.2 in Dg c. 131.1& in h6a K 22 in Dg
11". The partial pressure of nitrogen in dry atmosphere at a total air pressure of 1 h6a is
11&. Which parameter according to IS/ is correct? a. The absolute temperature at an altitude of 1 ft is about 2,) L
b. The relative humidity is 1 percent at mean sea level c. The Standard air pressure measures 22 inches of mercury
11). What is the temperature at an altitude of 2 !m according to IS/? a. 12 5% b. 2 5% c. 11 5%
11+. Which statement about aerodynamic lift is correct? a. If the airspeed increases the lift decreases b. If the surface area of an airfoil is increased also the lift increases c. The lift is inuenced by speed of sound
11,. Which statement about wing aspect ratio is correct? a. The induced drag doesnt depend on the aspect ratio b. The higher aspect ratio the less induced drag c. The higher aspect ratio the more induced drag
11. Which statement for IS/ is correct in the range from 11 !m to 2 !m altitude? a. =oth temperature and pressure stay constant b. Temparature and pressure decrease c. Temperature stay constant while the pressure decreases
12. What happens when the %J approches the %6 of an aircraft? a. Static stability will be increased b. The aircraft will be out of control immediately c. The e;uilibrium acts more indi#erent
121. Ice formation on an airfoil generates
122. What happens to dynamic pressure when static pressure increases? a. $ecreases proportionally b. Increases proportionally c. Stays stable
123. Which statement is true? a. Troposhere contains +& percent of total mass of air but this is only 1 percent of the volume of the atmosphere b. Deight of troposhere is the same from all places of earth c. The tropopause contains at least & percent of the total mass of the atmosphere
12". Which vector change occurs when an aircraft has a coordinated turn? a. The coeEcient of drag decreases b. The resultant lift of the aircraft decreases c. The resultant weight of the aircraft increases
12&. What does lift coeEcientM%lN depend on? a. /irfoil shape and angle of attac! b. /irspeed and air pressure c. Surface area of the wing and density
19/ 29% 39/ "9= &9= )9/ +9/ ,9= 9/ 19= 119/ 129% 139= 1"9= 1&9/ 1)9% 1+9% 1,9= 19/ 29% 219= 229% 239= 2"9% 2&9/
2)9= 2+9= 2,9/ 29/ 39= 319/ 329% 339/ 3"9= 3&9/ 3)9% 3+9= 3,9% 39/ "9% "19= "29% "39/ ""9/ "&9% ")9= "+9= ",9% "9= &9=
&19/ &29% &39= &"9= &&9% &)9= &+9/ &,9= &9= )9= )19% )29/ )39% )"9= )&9= ))9/ )+9/ ),9= )9= +9% +19% +29/ +39% +"9/ +&9=
+)9% ++9/ +,9/ +9% ,9/ ,19% ,29% ,39= ,"9% ,&9% ,)9/ ,+9/ ,,9/ ,9/ 9% 19/ 29= 39% "9% &9/ )9% +9= ,9/ 9= 19%
119= 129/ 139% 1"9/ 1&9% 1)9% 1+9= 1,9= 19= 119% 1119= 1129% 1139= 11"9% 11&9/ 11)9= 11+9= 11,9= 119% 129% 1219/ 1229/ 1239/ 12"9% 12&9/
TEST – 1
1. What is the partial pressure of o'ygen at an altitude with an atmospheric pressure of & h6a? a. 3 h6a
b. 21 h6a c. 1& h6a
2. What does C1* relative humidity> mean? a. It indicates that the air is perfectly dry b. It means that the air has absorbed all water it is able to do c. It shows the air contains no water at all and it is relatively denser
3. The air temperature at an altitude of 3. feet is < a. 9"&5% b. 9&).&5% c. O35L
". Which of the followings is not correct for atmospheric pressure? a. /s we go higher( air pressure becomes less b. /tmospheric pressure varies also with temperature( density and humidity c. /tmospheric pressure is the volume of air over a given area
&. When the relative humidity increases( the density of a#ected air mass < a. $ecreases b. Increases c. Stays stable
). /n increase in the velocity of air will cause the potential energy of the air to be < a. %onstant b. Increases c. $ecreased
+. What can be said for total pressure of a gas when the velocity of the gas is doubled? a. It is doubled b. It is four times more than before c. It stays stable
,. Which of the following causes s!in friction drag? a. The airow passing over the aircraft and tends to stic! to the s!in b. The air owing over one portion of the airframe interfering with the smooth ow of air over another portion c. 6ressure di#erences between upper and lower surfaces
. Wave drag is the drag caused by< a. Wing tip vortices b. ibrations generated by engine c. Jeneration of shoc! waves
1.What is the relation between lift coeEcient and angle of attac!? a. /s the angle of attac! increases( lift coeEcient increases proportionally b. /s the angle of attac! increases( lift coeEcient increases up to a point and then starts to decrease dramatically c. /s the angle of attac! increases( -rstly it decreases and then it start to increase continously
11.Which condition should be provided to !eep an aircraft at a constant velocity? a. 4ift must e;ual to weight b. Pngine should have some reserve of power enough to accelerate the aircraft c. DoriGontally bac!ward forces must e;ual horiGontally forward forces
12./n aircraft with a lide ration of 12 descends from 2. feet to 1.+ feet. What is the horiGontal distance ta!en? a. 1& feet b. ). feet c. 3". feet
13.What is the load factor on an aircraft during a level ight? a. 1 g b. g c. 91 g
1".What is the e#ect of a higher load factor at constant altitude in comparison with level ight? a. Increases stall speed b. $ecreases stall speed c. Fo e#ect on stall speed
1&.Which of the following about lift augmentation devices is correct? a. %amber of the wing surface may only be increased by deecting the trailing edge b. Slats allow a higher // before stall
c. / wing may have either a slot or ap
1).Which surface can be used to change the position of an aircraft around vertical a'is? a. 0udder b. DoriGontal stabiliser c. Plevator
1+.In relation to which a'is is an aircraft>s longitudinal stability e'pressed? a. ertical a'is b. 4ateral a'is c. 4ongitudinal a'is
1,.Which other name can be given to the stability in roll? a. 4ongitudinal stability b. $irectional stability c. 4ateral stability
1.Which type of wing may assist an aircraft to yaw bac! to the former position after a disturbance? a. Sweepbac! wing b. $ihedral wing c. Sawtooth wing
2.Which can be said for the stabilities of an aircraft that has an undamped oscillation behaviour? a. Statically stable and dynamically unstable b. Statically stable and dynamically neutral c. Statically unstable and dynamically stable
1.c – 2.b – 3.a – 4.c – 5.a – 6.c – 7.c – 8.a – 9.c – 10.b – 11.c – 12.b – 13.a – 14.a – 15.b – 16.a – 17.b – 18 .c – 19.a – 20.b Test – 2
1. Which is not correct for standard atmospheric temperature? a. It remains constant at 9&).&5 from S4 to an altitude of 2 !m b. /ir temperature at S4 is O1&5% c. /ir temperature at an altitude of 2. feet is 115%
2. Which type of drag can not be classi-ed as pro-le drag? a. Interference drag b. Aorm drag c. Induced drag
3. The line where the airow seperates so that some of it can pass over the top and rest along the mottom of wing is called < a. %hord line b. Stagnatin line c. ean camber line
". Aor a rectangular wing( wing span is , times longer than the length of chord. What is the value of wing aspect ratio? a. 17, b. , c. :
&. What is the name of line on a wing where all aerodynamic and gravitational forces are located? a. ean camber line b. Stagnation line c. ean aerodynamic chord
). Which of the following can be a correct de-nition of the term Cwash out>? a. Wash out is a twist that decreases the angle of incidence near the wing root b. Wash out is a twist that decreases the angle of incidence near the wing tip c. Wash out is a twist that increases the angle of incidence near the wing tip
+. Which of the following can ma!e a change in drag coeEcient? a. %hanging the power settings b. Alying at an altitude relatively denser c. P'tending the leading edge aps
,. Which parameter is not common in lift and drag e;uations? a. elocity b. Surface area c. %oeEcient
. Dow can a best glide angle be found for an aircraft? a. =y use of a tangent from the Gero point in polar diagram b. =y -nding the angle at which highest lift coeEcient is obtained c. =y -nding the angle at which lowest drag coeEcient is obtained
1.Dow does the airspeed inuence icing on planes? a. The higher air speed the higher ice build up b. The higher air speed the less ice build up c. Fo e#ect since it doesnt ma!e any change in temperature
11.Which of the icing factors doesnt inuence the type of ice formation? a. Temperature b. $roplet siGe c. /irfoil siGe
12.Which one is incorrect for drag? a. 6arasite drag increases as the airspeed increases b. Induced drag increases as the airspeed increases c. The total drag is least where induced and parasite drags are e;ual
13.What is the value of gliding angle if $74 e;uals 1 during gliding? a. 1&5 b. 35 c. "&5
1".Which of the following structures is an aid to minimiGe adverse yaw? a. Slots
