Discussion
Home ‣ Mechanical Engineering ‣ IC Engines and Nuclear Power Plants Comments
- Question
A petrol engine has compression ratio from
Options- A. 6 to 10
- B. 10 to 15
- C. 15 to 25
- D. 25 to 40
- Correct Answer
- 6 to 10
- 1. During suction stroke of a four stroke petrol engine, the inlet valve opens and the charge is sucked into the cylinder as the piston moves upwards from the bottom dead centre.
Options- A. True
- B. False Discuss
- 2. The object of providing masked inlet valve in the air passage of compression ignition engines is to
Options- A. enhance flow rate
- B. control air flow
- C. induce primary swirl
- D. induce secondary turbulence Discuss
- 3. Thermal efficiency of a two stroke cycle engine is __________ a four stroke cycle engine.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 4. The fuels in order of decreasing knock tendency for spark ignition engines are
Options- A. paraffins, aromatics, napthenes
- B. paraffins, napthenes, aromatics
- C. napthenes, aromatics, paraffins
- D. napthenes, paraffins, aromatics Discuss
- 5. A supercharged engine as compared to an ordinary engine
Options- A. is lighter
- B. requires smaller foundations
- C. consumes less lubricating oil
- D. all of these Discuss
- 6. The ratio of the indicated thermal efficiency to the air standard efficiency is known as
Options- A. mechanical efficiency
- B. overall efficiency
- C. volumetric efficiency
- D. relative efficiency Discuss
- 7. The firing order in an I.C. engine depends upon
Options- A. arrangement of the cylinders
- B. design of crankshaft
- C. number of cylinders
- D. all of these Discuss
- 8. The relative efficiency of an I.C. engine is the ratio of the indicated thermal efficiency to the air standard efficiency.
Options- A. Correct
- B. Incorrect Discuss
- 9. A diesel engine has inlet valve, fuel injection valve and exhaust valve.
Options- A. Yes
- B. No Discuss
- 10. The air-fuel ratio of the petrol engine is controlled by
Options- A. carburettor
- B. injector
- C. governor
- D. none of these Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: False
Correct Answer: induce primary swirl
Correct Answer: less than
Correct Answer: paraffins, napthenes, aromatics
Correct Answer: all of these
Correct Answer: relative efficiency
Correct Answer: all of these
Correct Answer: Correct
Correct Answer: Yes
Correct Answer: carburettor
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.