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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

  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

  5. An atom bomb utilises uncontrolled nuclear fission.

  6. A.
    True
    B.
    False

  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

  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

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

  12. A.
    True
    B.
    False

  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

  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

  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

  19. A moderator

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