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- Question
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
- Correct Answer
- constant
- 1. 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
- 2. If the compression ratio in I.C. engine increases, then its thermal efficiency will
Options- A. decrease
- B. increase
- C. remain same Discuss
- 3. 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
- 4. 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
- 5. 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
- 6. 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
- 7. 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
- 8. 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
- 9. The slowing down of fast neutrons is desirable because slow moving neutrons are more effective than fast neutrons in triggering fission.
Options- A. Agree
- B. Disagree Discuss
- 10. The brake power (B.P.) of the engine is given by (where W = Brake load or dead load in newtons, l = Length of arm in metres, N = Speed of engine in r.p.m., S - Spring balance reading in newtons, D = Dia. of brake drum in metres, and d = Dia. of rope in metres)
Options- A.
- B.
- C.
- D. all of these Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: pre-ignition
Correct Answer: increase
Correct Answer: all of the above
Correct Answer: at the crank shaft
Correct Answer: 75 to 90%
Correct Answer: Correct
Correct Answer: nuclear power plant
Correct Answer: detonation
Correct Answer: Agree
Correct Answer: all of these
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