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  • Question

  • The Thomson's turbine is __________ reaction turbine.


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

  • Correct Answer
  • an inward flow 

    • Hydraulic Machines problems

    Search Results

    • 1. The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. The discharge through a turbine is

    • Options
    • A. directly proportional to H1/2
    • B. inversely proportional to H1/2
    • C. directly proportional to H3/2
    • D. inversely proportional to H3/2
      • Discuss
    • 3. Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

    • Options
    • A. Pelton wheel
    • B. Francis turbine
    • C. Kaplan turbine
    • D. none of these
      • Discuss
    • 4. The specific speed (Ns) of a centrifugal pump is given by

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. Mechanical efficiency of a centrifugal pump is the ratio of

    • Options
    • A. energy available at the impeller to the energy supplied to the pump by the prime mover
    • B. actual workdone by the pump to the energy supplied to the pump by the prime mover
    • C. energy supplied to the pump to the energy available at the impeller
    • D. manometric head to the energy supplied by the impeller per kN of water
      • Discuss
    • 6. The flow ratio in case of Francis turbine varies from

    • Options
    • A. 0.15 to 0.3
    • B. 0.4 to 0.5
    • C. 0.6 to 0.9
    • D. 1 to 1.5
      • Discuss
    • 7. The cavitation in a hydraulic machine is mainly due to

    • Options
    • A. low velocity
    • B. high velocity
    • C. low pressure
    • D. high pressure
      • Discuss
    • 8. The Furneyron turbine is __________ reaction turbine.

    • Options
    • A. an axial flow
    • B. an inward flow
    • C. an outward flow
    • D. a mixed flow
      • Discuss
    • 9. The head available at the inlet of the turbine is known as net or effective head.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 10. A Francis turbine is an outward flow reaction turbine.

    • Options
    • A. True
    • B. False
      • Discuss

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