Discussion
Home ‣ Mechanical Engineering ‣ IC Engines and Nuclear Power Plants Comments
- Question
If the compression ratio in I.C. engine increases, then its thermal efficiency will
Options- A. decrease
- B. increase
- C. remain same
- Correct Answer
- increase
- 1. Which of the following statement is correct regarding the features of a Breeder reactor?
Options- A. It produces more fuel than it consumes.
- B. It requires highly enriched fuel.
- C. It requires liquid sodium metal as moderator.
- D. all of the above Discuss
- 2. The brake power is the power available
Options- A. in the engine cylinder
- B. at the crank shaft
- C. at the crank pin
- D. none of these Discuss
- 3. The volumetric efficiency ofa well designed engine may be
Options- A. 30 to 40%
- B. 40 to 60%
- C. 60 to 70%
- D. 75 to 90% Discuss
- 4. A long delay period in compression ignition engines gives a more rapid rise in pressure which causes knocking.
Options- A. Yes
- B. No Discuss
- 5. Detonation is harmful due to
Options- A. increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine
- B. excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls
- C. high intensity of knock causes crankshaft vibration and the engine runs rough
- D. none of the above Discuss
- 6. The ignition of the charge by some hot surface within the engine before the passage of spark is called
Options- A. pre-ignition
- B. detonation
- C. ignition delay
- D. auto-ignition Discuss
- 7. A nuclear reactor is said to be critical when the neutron population in the reactor core is
Options- A. rapidly increasing leading to the point of explosion
- B. decreasing from the specified value
- C. reduced to zero
- D. constant Discuss
- 8. In diesel engines, the ignition takes place due to the heat produced in the engine cylinder at the end of compression.
Options- A. Correct
- B. Incorrect Discuss
- 9. A power plant giving least running cost of production of electrical power is
Options- A. steam power plant
- B. gas turbine power plant
- C. hydro electric power plant
- D. nuclear power plant Discuss
- 10. The loud pulsating noise heard within the cylinder of an internal combustion engine is known as
Options- A. detonation
- B. turbulence
- C. pre-ignition
- D. supercharging Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: all of the above
Correct Answer: at the crank shaft
Correct Answer: 75 to 90%
Correct Answer: Yes
Correct Answer: none of the above
Correct Answer: pre-ignition
Correct Answer: constant
Correct Answer: Correct
Correct Answer: nuclear power plant
Correct Answer: detonation
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