Discussion
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- Question
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
- Correct Answer
- Correct
- 1. 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
- 2. 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
- 3. A petrol engine has compression ratio from
Options- A. 6 to 10
- B. 10 to 15
- C. 15 to 25
- D. 25 to 40 Discuss
- 4. 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
- 5. 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
- 6. A diesel engine has inlet valve, fuel injection valve and exhaust valve.
Options- A. Yes
- B. No Discuss
- 7. The air-fuel ratio of the petrol engine is controlled by
Options- A. carburettor
- B. injector
- C. governor
- D. none of these Discuss
- 8. The power actually developed by the engine cylinder of an I.C. engine is known as
Options- A. theoretical power
- B. actual power
- C. indicated power
- D. none of these Discuss
- 9. Gas turbine as compared to internal combustion engine
Options- A. can be driven at a very high speed
- B. produces uniform torque
- C. has more efficiency
- D. all of these Discuss
- 10. In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at
Options- A. diffuser inlet radius
- B. diffuser outlet radius
- C. impeller inlet radius
- D. impeller outlet radius Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: all of these
Correct Answer: relative efficiency
Correct Answer: 6 to 10
Correct Answer: False
Correct Answer: induce primary swirl
Correct Answer: Yes
Correct Answer: carburettor
Correct Answer: indicated power
Correct Answer: all of these
Correct Answer: diffuser outlet radius
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