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Mechanical Engineering :: Steam Boilers and Engines

  1. A device used to increase the temperature of saturated steam without raising its pressure, is called

  2. A.

    blow off cock

    B.

    fusible plug

    C.

    superheater

    D.

    stop valve


  3. The diameter of flue tube in a Cornish boiler is __________ that of the shell.

  4. A.

    one-fourth

    B.

    one-third

    C.

    two-fifth

    D.

    three-fifth


  5. An economiser __________ the steam raising capacity of a boiler.

  6. A.

    increases

    B.

    decreases

    C.

    has no effect on


  7. Fire tube boilers are

  8. A.

    internally fired

    B.

    externally fired

    C.

    internally as well as externally fired

    D.

    none of these


  9. A safety valve usually employed with stationary boilers is

  10. A.

    lever safety valve

    B.

    dead weight safety valve

    C.

    high steam and low water safety valve

    D.

    all of these