Discussion
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- Question
The thermodynamic cycle on which the petrol engine works, is
Options- A. Otto cycle
- B. Joule cycle
- C. Rankine cycle
- D. Stirling cycle
- Correct Answer
- Otto cycle
- 1. The inlet valve of a four stroke cycle internal combustion engine remains open for
Options- A. 130°
- B. 180°
- C. 230°
- D. 270° Discuss
- 2. The knocking in spark ignition engines can be reduced by
Options- A. retarding the spark
- B. increasing the engine speed
- C. both (a) and (b)
- D. none of these Discuss
- 3. A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be
Options- A. stable under nuclear radiation
- B. corrossion resistant
- C. good thermal conductor
- D. all of these Discuss
- 4. The ratio of the heat equivalent to one kW hour to the heat in fuel per B.P. hour is termed as brake thermal efficiency.
Options- A. Yes
- B. No Discuss
- 5. Theoretically, a four stroke cycle engine should develop __________ power as that of a two stroke cycle engine.
Options- A. half
- B. same
- C. double
- D. four times Discuss
- 6. The working pressure and temperature inside the cylinder of an internal combustion engine is __________ as compared to a steam engine.
Options- A. low
- B. very low
- C. high
- D. very high Discuss
- 7. Lubrication in I.C. engines dissipates the heat generated from the moving parts due to friction.
Options- A. True
- B. False Discuss
- 8. If V1 is the jet velocity and V0 is the vehicle velocity, then propulsive efficiency of a turbo-jet engine is
Options- A.
- B.
- C.
- D.
Discuss
- 9. The delay period in compression ignition engines depends upon
Options- A. temperature and pressure in the cylinder at the time of injection
- B. nature of the fuel mixture strength
- C. relative velocity between the fuel injection and air turbulence pressure of residual gases
- D. all of the above Discuss
- 10. A mixture containing 65% of iso-octane and 35% of normal heptane will have
Options- A. cetane number 65
- B. octane number 65
- C. qetane number 35
- D. octane number 35 Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: 230°
Correct Answer: both (a) and (b)
Correct Answer: all of these
Correct Answer: Yes
Correct Answer: half
Correct Answer: very high
Correct Answer: True
Correct Answer:
Correct Answer: all of the above
Correct Answer: octane number 65
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