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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

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

  4. A.
    same
    B.
    lower
    C.
    higher

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

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

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

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

  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

  11. U233 is produced

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

  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

  15. The detonation is also called knocking or pinking.

  16. A.
    Yes
    B.
    No

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

  18. A.
    Agree
    B.
    Disagree

  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