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Mechanical Engineering :: Hydraulic Machines

Hydraulic Machines - Section 1
Hydraulic Machines - Section 2
Hydraulic Machines - Section 3
Hydraulic Machines - Section 4

  1. Slip of a reciprocating pump is negative, when

    2. A.
    suction pipe is short and pump is running at low speeds
    B.
    delivery pipe is long and pump is running at high speeds
    C.
    suction pipe is short and delivery pipe is long and the pump is running at low speeds
    D.
    suction pipe is long and delivery pipe is short and the pump is running at high speeds

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  2. Which of the following is not an impulse turbine?

    3. A.
    Girad turbine
    B.
    Turgo turbine
    C.
    Pelton wheel
    D.
    Kaplan turbine

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  3. A hydraulic accumulator is a device used to store __________ energy which may be supplied to a machine later on.

    4. A.
    strain
    B.
    pressure
    C.
    kinetic

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  4. The Furneyron turbine is __________ reaction turbine.

    5. A.
    an axial flow
    B.
    an inward flow
    C.
    an outward flow
    D.
    a mixed flow

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  5. The discharge through a turbine is

    6. A.
    directly proportional to H1/2
    B.
    inversely proportional to H1/2
    C.
    directly proportional to H3/2
    D.
    inversely proportional to H3/2

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  6. Which of the following pump is sucessfully used for lifting water to the boilers?

    7. A.
    Centrifugal pump
    B.
    Reciprocating pump
    C.
    Jet pump
    D.
    Air-lift pump

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  7. The efficiency of a reaction turbine for a given head __________ with the increase in speed.

    8. A.
    decreases
    B.
    increases

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  8. In an impulse turbine, the pressure of water both at entering and leaving the vanes, is atmospheric.

    9. A.
    Agree
    B.
    Disagree

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  9. Which of the following pump is successfully used for lifting water from deep wells?

    10. A.
    Centrifugal pump
    B.
    Reciprocating pump
    C.
    Jet pump
    D.
    Air lift pump

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  10. The Thomson's turbine is __________ reaction turbine.

    11. A.
    an axial flow
    B.
    an inward flow
    C.
    an outward flow
    D.
    a mixed flow

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