Discussion
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- Question
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
- Correct Answer
- longer ignition delay
- 1. 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 Discuss
- 2. Reflector in nuclear power plants __________ neutron leakage.
Options- A. increases
- B. decreases
- C. have no effect on Discuss
- 3. Alpha-methyl-naphthalene (C11 H10) has a cetane number of
Options- A. 0
- B. 50
- C. 100
- D. 120 Discuss
- 4. The reflectivity depends upon
Options- A. geometry of the reflector
- B. energy of neutrons
- C. properties of the reflector
- D. all of these Discuss
- 5. The material most commonly used for sheilding is
Options- A. carbon
- B. lead
- C. concrete
- D. all of these Discuss
- 6. 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
- 7. Which of the following fuel has little tendency towards detonation?
Options- A. Benzene
- B. Iso-octane
- C. Normal heptane
- D. Alcohol Discuss
- 8. Iso-octane (C8H18) has octane number of
Options- A. 0
- B. 50
- C. 100
- D. 120 Discuss
- 9. 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
- 10. Stoichiometric ratio is
Options- A. chemically correct air-fuel ratio by weight
- B. chemically correct air-fuel ratio by volume
- C. actual air-fuel ratio for maximum efficiency
- D. none of the above Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: compression ratio
Correct Answer: decreases
Correct Answer: 0
Correct Answer: all of these
Correct Answer: concrete
Correct Answer: True
Correct Answer: Iso-octane
Correct Answer: 100
Correct Answer: Agree
Correct Answer: chemically correct air-fuel ratio by volume
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