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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 fire tubes in a Cochran boiler are

    2. A.

    horizontal
    B.

    vertical
    C.

    inclined

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  2. A double acting steam engine with a cylinder diameter of 190 mm and a stroke of 300 mm has a cut-off of 0.35. The expansion ratio for this engine is nearly

    3. A.

    1.05
    B.

    2.86
    C.

    6.65
    D.

    10.05

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  3. The aim of a compound steam engine is

    4. A.

    to reduce the ratio of expansion in each cylinder
    B.

    to reduce the length of stroke
    C.

    to reduce the temperature range in each cylinder
    D.

    to reduce the temperature range in each cylinder

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  4. The average operating pressure of Benson boiler is

    5. A.

    100 bar
    B.

    150 bar
    C.

    200 bar
    D.

    250 bar

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  5. The diameter of Cornish boiler varies from

    6. A.

    0.5 to 1 m
    B.

    1 to 2 m
    C.

    1.25 to 2.5 m
    D.

    2 to 3 m

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