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Mechanical Engineering :: IC Engine and Nuclear Power Plants

  1. The advancing of spark timing in spark ignition engines will __________ knocking tendency.

  2. A.
    increase
    B.
    reduce
    C.
    not effect

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  3. The knocking in spark ignition engines can be reduced by

  4. A.
    retarding the spark
    B.
    increasing the engine speed
    C.
    both (a) and (b)
    D.
    none of these

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  5. An atom bomb utilises uncontrolled nuclear fission.

  6. A.
    True
    B.
    False

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  7. The ratio of the brake power to the indicated power is called

  8. A.
    mechanical efficiency
    B.
    overall efficiency
    C.
    indicated thermal efficiency
    D.
    volumetric efficiency

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  9. The increase of efficiency of a compression ignition engine, as the load decreases, is due to

  10. A.
    higher maximum temperature
    B.
    qualitative governing
    C.
    quantitative governing
    D.
    hit and miss governing

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  11. A turbo-jet does not require a turbine to drive the compressor.

  12. A.
    True
    B.
    False

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  13. For the same maximum pressure and heat input, the exhaust temperature of petrol engine is __________ than that of diesel engine.

  14. A.
    less
    B.
    more

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  15. The compression ratio in petrol engines is kept low as compared to diesel engines because higher compression ratio in petrol engines would lead to pre-ignition of fuel.

  16. A.
    Agree
    B.
    Disagree

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  17. Morse test is used to determine the I.P. of a

  18. A.
    single cylinder petrol engine
    B.
    four stroke engine
    C.
    single cylinder diesel engine
    D.
    multi-cylinder engine

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  19. A moderator

  20. A.
    absorbs neutrons
    B.
    does not absorb neutrons
    C.
    accelerates neutrons
    D.
    none of these

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