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Mechanical Engineering :: Steam Boilers and Engines

Steam Boilers and Engines - Section 1
Steam Boilers and Engines - Section 2
Steam Boilers and Engines - Section 3
Steam Boilers and Engines - Section 4
Steam Boilers and Engines - Section 5

  1. The diagram factor is the ratio of the

    2. A.

    area of the actual indicator diagram to the area of theoretical indicator diagram
    B.

    actual workdone per stroke to the theoretical workdone per stroke
    C.

    actual mean effective pressure to the theoretical mean effective pressure
    D.

    any one of the above

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  2. By compounding the expansion of steam in two or more cylinders, the length of stroke

    3. A.

    does not change
    B.

    increases
    C.

    decreases

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  3. The velocity of flue gases (V) through the chimney under a static draught of(H') metres is given by

    4. A.

    \(V= \sqrt{2gH'}\)
    B.

    \(V= \sqrt{2g/H'}\)
    C.

    \(V= H'/ \sqrt{2g}\)
    D.

    \(V = 2g\sqrt{H'}\)

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  4. A good steam boiler is one which produces maximum quantity of steam with the given fuel

    5. A.

    Agree
    B.

    Disagree

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  5. Cut-off ratio is the ratio of

    6. A.

    Cut-off ratio is the ratio of
    B.

    volume at cut-off to the clearance volume
    C.

    volume at cut-off to the swept volume
    D.

    clearance volume to the volume at cut-off

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