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Mechanical Engineering :: IC Engine and Nuclear Power Plants

  1. A diesel engine has

  2. A.
    one valve
    B.
    two valves
    C.
    three valves
    D.
    four valves

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  3. The self ignition temperature of petrol is __________ as compared to diesel oil.

  4. A.
    same
    B.
    lower
    C.
    higher

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  5. The pressure inside the cylinder is __________ the atmospheric pressure during the exhaust stroke.

  6. A.
    equal to
    B.
    below
    C.
    above

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  7. The increase of cooling water temperature in petrol engine will __________ the knocking tendency.

  8. A.
    not effect
    B.
    decrease
    C.
    increase

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  9. A carburettor is used to supply

  10. A.
    petrol, air and lubricating oil
    B.
    air and diesel
    C.
    petrol and lubricating oil
    D.
    petrol and air

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  11. U233 is produced

  12. A.
    artificially
    B.
    as basic raw material
    C.
    when thorium is irradiated by neutrons
    D.
    by fission of U238

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  13. The pressure at the end of compression, in diesel engines, is approximately

  14. A.
    10 bar
    B.
    20 bar
    C.
    25 bar
    D.
    35 bar

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  15. The detonation is also called knocking or pinking.

  16. A.
    Yes
    B.
    No

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  17. The pre-ignition occurs before the spark is produced whereas detonation develops after the introduction of spark.

  18. A.
    Agree
    B.
    Disagree

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  19. The energy released during the fission of one atom of Uranium - 235 in million electron volts is about

  20. A.
    100
    B.
    200
    C.
    300
    D.
    400

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