Discussion
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- Question
The natural gas is compressed in a CNG cylinder at a pressure of
Options- A. 200 bar
- B. 220 bar
- C. 250 bar
- D. 300 bar
- Correct Answer
- 200 bar
- 1. The cetane rating of Diesel fuel is in the order of
Options- A. 25
- B. 45
- C. 70
- D. 90 Discuss
- 2. In a fuel injection system, the electronic control module (ECM) calculates the optimum fuel-injection volume for the engine condition based on the data received from the sensors, and injects this volume of fuel into the intake manifold at the optimum timing.
Options- A. Correct
- B. Incorrect Discuss
- 3. The motion of the cam is transferred to the valves through
Options- A. pistons
- B. rocker arms
- C. camshaft pulley
- D. valve stems Discuss
- 4. If the engine coolant leaks into the engine oil, then engine oil
Options- A. appears milky
- B. becomes foamy
- C. turns black
- D. none of these Discuss
- 5. The vehicle ride will be comfortable if
Options- A. unsprung mass is kept minimum
- B. sprang mass is kept minimum
- C. vehicle mass is kept minimum
- D. all of these Discuss
- 6. The co-efficient of rolling resistance for a truck weighing 63 500 N is 0.018. The rolling resistance to the truck is
Options- A. 1.143 N
- B. 11.43 N
- C. 114.3 N
- D. 1143 N Discuss
- 7. What type of bearing is used for main bearings and connecting rod bearings?
Options- A. Ballbearings
- B. Plain bearings
- C. Needle roller bearing
- D. Taper roller bearing Discuss
- 8. The flywheel and the pressure plate bind the clutch disc between them so that the engine and the transmission can be engaged.
Options- A. Yes
- B. No Discuss
- 9. The valve overlap in four stroke petrol engines is approximately
Options- A. 30°
- B. 60°
- C. 90°
- D. 120° Discuss
- 10. It is necessary to maintain the valve clearances as they
Options- A. reduce the resistance to sliding that occurs between the cam and the tappet
- B. allow for lengthening of the valves owing to the heat of combustion
- C. increase the speed at which the valves move up and down
- D. make the crankshaft turn smoothly Discuss
Automobile Engineering problems
Search Results
Correct Answer: 45
Correct Answer: Correct
Correct Answer: rocker arms
Correct Answer: appears milky
Correct Answer: unsprung mass is kept minimum
Correct Answer: 1143 N
Correct Answer: Plain bearings
Correct Answer: Yes
Correct Answer: 30°
Correct Answer: allow for lengthening of the valves owing to the heat of combustion
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