Discussion
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- Question
The air standard efficiency of an I.C. engine depends on
Options- A. fuel used
- B. speed of engine
- C. compression ratio
- D. none of these
- Correct Answer
- compression ratio
- 1. Reflector in nuclear power plants __________ neutron leakage.
Options- A. increases
- B. decreases
- C. have no effect on Discuss
- 2. Alpha-methyl-naphthalene (C11 H10) has a cetane number of
Options- A. 0
- B. 50
- C. 100
- D. 120 Discuss
- 3. The reflectivity depends upon
Options- A. geometry of the reflector
- B. energy of neutrons
- C. properties of the reflector
- D. all of these Discuss
- 4. The material most commonly used for sheilding is
Options- A. carbon
- B. lead
- C. concrete
- D. all of these Discuss
- 5. In petrol engines, the delay period is of the order of
Options- A. 0.001 second
- B. 0.002 second
- C. 0.003 second
- D. 0.004 second Discuss
- 6. By higher octane number of spark ignition fuel, it is meant that the fuel has
Options- A. higher heating value
- B. higher flash point
- C. lower volatility
- D. longer ignition delay Discuss
- 7. The overall efficiency is defined as the ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time.
Options- A. True
- B. False Discuss
- 8. Which of the following fuel has little tendency towards detonation?
Options- A. Benzene
- B. Iso-octane
- C. Normal heptane
- D. Alcohol Discuss
- 9. Iso-octane (C8H18) has octane number of
Options- A. 0
- B. 50
- C. 100
- D. 120 Discuss
- 10. If the fuel is rich in fissionable material, the reactor can be made more compact than if the percentage of fissionable atoms is small.
Options- A. Agree
- B. Disagree Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: decreases
Correct Answer: 0
Correct Answer: all of these
Correct Answer: concrete
Correct Answer: 0.002 second
Correct Answer: longer ignition delay
Correct Answer: True
Correct Answer: Iso-octane
Correct Answer: 100
Correct Answer: Agree
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