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 |
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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