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Mechanical Engineering :: Steam Boilers and Engines

  1. The natural draught is produced by

  2. A.

    steam jet

    B.

    centrifugal fan

    C.

    chimney

    D.

    both (a) and (b)


  3. Willian's line for the steam engine is a straight line relationship between the steam consumption per hour and

  4. A.

    indicated power

    B.

    brake power

    C.

    efficiency

    D.

    pressure of steam


  5. The temperature of condensate is __________ on leaving the condenser than that of circulating water at inlet.

  6. A.

    higher

    B.

    lower


  7. A draught produced by a chimney due to the difference of densities between the hot gases inside the chimney and cold atmospheric air outside it, is called natural draught.

  8. A.

    Yes

    B.

    No


  9. Which of the following statement is correct ?

  10. A.

    A fire tube boiler occupies less space than a water tube boiler, for a given power.

    B.

    Steam at a high pressure and in large quantities can be produced with a simple vertical boiler.

    C.

    A simple vertical boiler has one fire tube.

    D.

    all of the above