Mechanical Engineering Questions And Answers :: Ic Engines: part1



Mechanical Engineering : Ic Engines QUESTIONS AND ANSWERS :: part1 : 11 to 15

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

11.The maximum temperature in the I.C. engine cylinder is of the order of

500- 1000�C
1000- 1500�C
1500-2000�C
2000-2500�C
2500-3000�C

12.The calorific value of gaseous fuels is expressed in terms of

kcal
kcal/kg
kcal/m2
kcal/n?
all of the above.

13.Pick up the wrong statement

2-stroke engine can run in any direction
In 4-stroke engine, a power stroke is obtained in 4-strokes
thermal efficiency of 4-strokc engine is more due to positive scavenging
petrol engines work on to cycle
petrol engines occupy more space than diesel engines for same power output.

14.The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will

increase
decrease
be independent
may increase or decrease depending on other factors
none of the above.

15.In a typical medium speed 4-stroke cycle diesel engine the inlet valve

opens at 20� before top dead center and closes at 35� after the bottom dead center
opens at top dead center and closes at bottom dead center
opens at 10� after top dead center and closes 20� before the bottom dead center
may open or close anywhere
remains open for 200�.

More Ic Engines QUESTIONS AND ANSWERS available in next pages

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