# 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 2024 and IES 2024 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 ANSWER : : 2000-2500�C Explanation :
 12.The calorific value of gaseous fuels is expressed in terms of kcal kcal/kg kcal/m2 kcal/n? all of the above. ANSWER : : kcal/n? Explanation :
 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. ANSWER : : petrol engines occupy more space than diesel engines for same power output. Explanation :
 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. ANSWER : : decrease Explanation :
 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�. ANSWER : : opens at 20� before top dead center and closes at 35� after the bottom dead center Explanation :

More Ic Engines QUESTIONS AND ANSWERS available in next pages

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