Mechanical Engineering Interview Questions and Answers interview questions
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Job interviews are usually the clincher in the job application process. Even the most intelligent candidate can fail if he doesn't know how to handle an interview. The best way to make sure that we...
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Salesforce Interview Questions and Answers for Clearing the Interview.
1.
Why Entropy decreases with increase in temperature?
Ans. ds=dQ/T Entropy is inversely proportional to the temperature so, as temp. Increases, entropy decreases.
2. Why different types of sound are produced in different bikes thou!h they run on "# En!ines? Ans. Engine specifications are different in different manufactures like as Bore Diameter (CC), Ignition timing. Also the ehaust passage takes more responsi!le for sound.
$. Ans.
%ow much Watt means 1%p? "#$.% &att
&.
E'p(ain )icyc(e *ear Whee( "procket workin!?
Ans.
'ear heel sprocket orks under the principle of ratchet and pal.
+.
,efinition of -ctane umber and etane umber?
Ans. ctane *o.+ ctane num!er is defined as the percentage, !y volume, of iso octane in the miture of iso octane and h+heptane. It is the measure of rating of I engine. Cetane *o.+ Cetane num!er is defined as the percentage, !y volume, of n+cetane in the miture of n+ cetane and alpha methyl naphthalene. It is the measure of rating of CI engine.
0. Ans.
Which echanism is used in Automobi(e !earin! "ystem? Differential mechanism mechanism
.
When rude -i( is %eated Which %ydro arbon comes first?
Ans.
*atural gas (-asoline) at %/ Celsius
3.
%ow to ca(cu(ate )earin! number ti ,iameter of the inner and outer?
Ans. Divide the the shaft diameter si0e !y 1, it ill give last last to to digit of the the !earing no. and according to to type of load e have to choose the type of !earing and that ill give prior num!er of the !earing.
What happens if !aso(ine is used in a ,iese( En!ine ,iese( En!ine wi(( work?
Ans. *o, It ill not ork, as the Compression ratio of 2etrol engine is 0 to 17 3 that of Diesel engine is 1+ to 22. 4hus on such high compression, gasoline gets highly compressed 3 it may !last.
11.
8oissons *atio is %i!her in *ubber/"tee(/Wood?
Ans. &hen a material is compressed in one direction, it usuallytends to epand in the other to directions perpendicular tothe direction of compression. 4his phenomenon is called the2oisson effect. 2oisson5s ratio is a measure of the 2oisson effect. 6or ru!!er 7 /.1 6or steel 7 /.%88 6or ood 9 /.% 4hus 2oisson5s ratio is higher in ':BBE'.
