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Home Mechanical Engineering Hydraulic Machines Comments

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


  • Options
  • A. Agree
  • B. Disagree

  • Correct Answer
  • Agree 


  • Hydraulic Machines problems


    Search Results


    • 1. Head developed by a centrifugal pump is

    • Options
    • A. proportional to diameter of impeller
    • B. proportional to speed of impeller
    • C. proportional to diameter and speed of impeller
    • D. none of the above
    • Discuss
    • 2. If the ratio of all the corresponding linear dimensions are equal, then the model and the prototype are said to have

    • Options
    • A. geometric similarity
    • B. kinematic similarity
    • C. dynamic similarity
    • D. none of these
    • Discuss
    • 3. The unit speed of the turbine runner is

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 4. A reciprocating pump is also called a __________ displacement pump.

    • Options
    • A. positive
    • B. negative
    • Discuss
    • 5. A hydraulic accumulator is a device used to store __________ energy which may be supplied to a machine later on.

    • Options
    • A. strain
    • B. pressure
    • C. kinetic
    • Discuss
    • 6. The function of guide vanes in a reaction turbine is to

    • Options
    • A. allow the water to enter the runner without shock
    • B. allow the water to flow over them, without forming eddies
    • C. allow the required quantity of water to enter the turbine
    • D. all of the above
    • Discuss
    • 7. The number of buckets on the periphery of a Pelton wheel is given by

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 8. The undershot water wheels are those in which

    • Options
    • A. the wheel runs entirely by the weight of water
    • B. the wheel runs entirely by the impulse of water
    • C. the wheel runs partly by the weight of water and partly by the impulse of water
    • D. none of the above
    • Discuss
    • 9. A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used?

    • Options
    • A. Pelton wheel with one nozzle
    • B. Pelton wheel with two or more nozzles
    • C. Kaplan turbine
    • D. Francis turbine
    • Discuss
    • 10. If the ratio of corresponding velocities at corresponding points are equal, then the model and the prototype are said to have dynamic similarity.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss


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