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Mechanical Engineering :: Steam Boilers and Engines

  1. In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as

  2. A.

    50° C and normal atmospheric pressure

    B.

    50° C and 1.1 bar pressure

    C.

    100° C and normal atmospheric pressure

    D.

    100° C and 1.1 bar pressure


  3. Clearance ratio is the ratio of

  4. A.

    clearance volume to the swept volume

    B.

    clearance volume to the volume at cut-off

    C.

    volume at cut-off to the swept volume

    D.

    swept volume to the clearance volume


  5. A condenser maintains a low pressure (below atmospheric) so as to obtain the maximum possible energy from steam and thus to secure a high efficiency.

  6. A.

    Agree

    B.

    Disagree


  7. The amount of water evaporated from and at 100° C into dry and saturated steam is called evaporative capacity of a boiler.

  8. A.

    Yes

    B.

    No


  9. The difference between the atmospheric pressure and the absolute pressure is known as vacuum in a condenser.

  10. A.

    Agree

    B.

    Disagree