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Mechanical Engineering :: Steam Boilers and Engines

  1. The function of a valve rod is

  2. A.

    to provide reciprocating motion to the slide valve

    B.

    to convert reciprocating motion of the piston into rotary motion of the crank

    C.

    to convert rotary motion of the crankshaft into to and fro motion of the valve rod

    D.

    to provide simple harmonic motion to the D-slide valve


  3. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

  4. A.

    blow off cock

    B.

    stop valve

    C.

    superheater

    D.

    none of these


  5. The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called

  6. A.

    safety valve

    B.

    water level indicator

    C.

    pressure gauge

    D.

    fusible plug


  7. In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of

  8. A.

    10 atmospheres

    B.

    20 atmospheres

    C.

    30 atmospheres

    D.

    40 atmospheres


  9. A device used to empty the boiler whenever required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler, is called blow off cock.

  10. A.

    Yes

    B.

    No