Discussion
Home ‣ Mechanical Engineering ‣ IC Engines and Nuclear Power Plants Comments
- Question
A moderator generally used in nuclear power plants is
Options- A. graphite
- B. heavy water
- C. concrete
- D. graphite and concrete
- Correct Answer
- graphite and concrete
- 1. Each fission of U235 produces on the average __________ fast neutrons as a product of reaction.
Options- A. 2.46
- B. 24.6
- C. 246
- D. 2460 Discuss
- 2. High speed compression engines operate on
Options- A. Otto cycle
- B. Diesel cycle
- C. Dual-combustion cycle
- D. all of these Discuss
- 3. In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the
Options- A. beginning of suction stroke
- B. end of suction stroke
- C. beginning of exhaust stroke
- D. end of exhaust stroke Discuss
- 4. The predominent isotope of the naturally occuring element is
Options- A. U235
- B. U238
- C. Pu233
- D. Pu239 Discuss
- 5. In a four stroke cycle petrol engine, the charge is ignited at
Options- A. 30° before top dead centre
- B. 30° after top dead centre
- C. 30° before bottom dead centre
- D. 30° after bottom dead centre Discuss
- 6. Morse test can be conducted for
Options- A. petrol engines
- B. diesel engines
- C. multi-cylinder engines
- D. all of these Discuss
- 7. The thermal efficiency of diesel engines is about
Options- A. 15%
- B. 30%
- C. 50%
- D. 70% Discuss
- 8. In nuclear power plants, due to reflector, less fuel is needed to generate sufficient neutrons to sustain a chain reaction.
Options- A. Yes
- B. No Discuss
- 9. U233 is produced
Options- A. artificially
- B. as basic raw material
- C. when thorium is irradiated by neutrons
- D. by fission of U238 Discuss
- 10. The brake power of a diesel engine, keeping other parameters constant, can be increased by
Options- A. decreasing the density of intake air
- B. increasing the temperature of intake air
- C. increasing the pressure of intake air
- D. decreasing the pressure of intake air Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: 2.46
Correct Answer: Dual-combustion cycle
Correct Answer: beginning of suction stroke
Correct Answer: U238
Correct Answer: 30° before top dead centre
Correct Answer: multi-cylinder engines
Correct Answer: 70%
Correct Answer: Yes
Correct Answer: when thorium is irradiated by neutrons
Correct Answer: increasing the pressure of intake air
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