Home / Mechanical Engineering / Hydraulic Machines :: Section 3

Mechanical Engineering :: Hydraulic Machines

  1. A reciprocating pump is also called a __________ displacement pump.

  2. A.
    positive
    B.
    negative

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. The head available at the inlet of the turbine is known as net or effective head.

  4. A.
    Correct
    B.
    Incorrect

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. In an axial flow reaction turbine, the water flows __________ to the axis of the wheel.

  6. A.
    parallel
    B.
    perpendicular

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. The air vessel, in a reciprocating pump, is a cast iron closed chamber having an opening at its base.

  8. A.
    Agree
    B.
    Disagree

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. A double overhung Pelton wheel has

  10. A.
    two jets
    B.
    two runners
    C.
    four jets
    D.
    four runners

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. The specific speed (Ns) of a centrifugal pump is given by

  12. View Answer

    Workspace

    Discuss Discuss in Forum


  13. Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?

  14. A.
    Hydraulic ram
    B.
    Hydraulic intensifier
    C.
    Hydraulic torque converter
    D.
    Hydraulic accumulator

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is

  16. View Answer

    Workspace

    Discuss Discuss in Forum


  17. In a reaction turbine, the water enters the wheel under pressure and flows over the vanes.

  18. A.
    Correct
    B.
    Incorrect

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. If the ratio of all the corresponding linear dimensions are equal, then the model and the prototype are said to have

  20. A.
    geometric similarity
    B.
    kinematic similarity
    C.
    dynamic similarity
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum