Discussion
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- Question
The increase in intake temperature of internal combustion engines will __________ efficiency.
Options- A. have no effect on
- B. increase
- C. decrease
- Correct Answer
- decrease
- 1. Number of working strokes per min. for a two stroke cycle engine are __________ the speed of the engine in r.p.m.
Options- A. equal to
- B. one-half
- C. twice
- D. four-times Discuss
- 2. The knocking tendency in spark ignition engines may be decreased by
Options- A. controlling the air-fuel mixture
- B. controlling the ignition timing
- C. controlling the exhaust temperature
- D. reducing the compression ratio Discuss
- 3. Which of the following fuel detonates readily?
Options- A. Benzene
- B. Iso-octane
- C. Normal heptane
- D. Alcohol Discuss
- 4. The reflectivity of a reflector is defined as the fraction of neutrons entering the reflector which are returned to the core.
Options- A. Agree
- B. Disagree Discuss
- 5. Which of the following statement is wrong?
Options- A. A four stroke cycle engine develops twice the power as that of a two stroke cycle engine.
- B. For the same power developed, a four stroke cycle engine is lighter, less bulky and occupies less floor area.
- C. The petrol engines are costly than diesel engines.
- D. all of the above Discuss
- 6. Which of the following does not relate to a spark ignition engine?
Options- A. Ignition coil
- B. Spar kplug
- C. Carburettor
- D. Fuel injector Discuss
- 7. Solid fuel fabricated into various small shapes, which are assembled to form fuel elements, is in the form of
Options- A. plates
- B. pallets
- C. pins
- D. all of these Discuss
- 8. A diesel engine is __________ as compared to petrol engine, both running at rated load.
Options- A. equally efficient
- B. less efficient
- C. more efficient Discuss
- 9. 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
- 10. The material most commonly used for sheilding is
Options- A. carbon
- B. lead
- C. concrete
- D. all of these Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: equal to
Correct Answer: reducing the compression ratio
Correct Answer: Normal heptane
Correct Answer: Agree
Correct Answer: all of the above
Correct Answer: Fuel injector
Correct Answer: all of these
Correct Answer: more efficient
Correct Answer: 0.002 second
Correct Answer: concrete
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