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Mechanical Engineering :: Steam Boilers and Engines

  1. The cut-off ratio is the reciprocal of expansion ratio,

  2. A.

    Correct

    B.

    Incorrect


  3. In a receiver type compound engine, the high pressure and low pressure cylinders

  4. A.

    have common piston rod

    B.

    are set at 90°

    C.

    have separate piston rods

    D.

    are set in V - arrangement


  5. The damper in a steam boiler is provided to control the draught (i.e. rate of flow of air) and thus regulate the rate of generation of steam.

  6. A.

    Correct

    B.

    Incorrect


  7. The clearance in the engine cylinder

  8. A.

    increases the mean effective pressure

    B.

    increases the workdone

    C.

    decreases the efficiency of the engine

    D.

    all of these


  9. Which of the following is not a boiler mounting?

  10. A.

    Blow off cock

    B.

    Feed check valve

    C.

    Economiser

    D.

    Fusible plug