Hydraulic Machines MCQs with answers Page - 6

Here, you will find a collection of MCQ questions on Hydraulic Machines. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

Admin • 802.91K Points
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Q. For 450 m head of water,

  • (A) Pelton wheel
  • (B) Kaplan turbine
  • (C) Francis turbine
  • (D) none of these

A

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Q. Delivery head of a centrifugal pump is

  • (A) directly proportional to N
  • (B) inversely proportional to N
  • (C) directly proportional to N2
  • (D) inversely proportional to N2

A

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Q. The discharge through a turbine is

  • (A) directly proportional to H1/2
  • (B) inversely proportional to H1/2
  • (C) directly proportional to H3/2
  • (D) inversely proportional to H3/2

A

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Q. The flow ratio of Francis turbine is defined as the ratio of the

  • (A) velocity of flow at inlet to the theoretical jet velocity
  • (B) theoretical velocity of jet to the velocity of flow at inlet
  • (C) velocity of runner at inlet to the velocity of flow at inlet
  • (D) none of the above

A

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Q. A Kaplan turbine is preferred for a specific speed of 300 to 1000 r.p.m.

  • (A) Yes
  • (B) No
  • (C) ---
  • (D) ---

A

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Q. A hydraulic ram is a device used to

  • (A) store the energy of water
  • (B) increase the pressure of water
  • (C) to lift water from deep wells
  • (D) to lift small quantity of water to a greater height when a large quantity of water is available at a smaller height

A

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Q. In a mixed flow centrifugal pump, the flow through the impeller is a combination of radial and axial flows.

  • (A) Correct
  • (B) Incorrect
  • (C) ---
  • (D) ---

A

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

  • (A) Agree
  • (B) Disagree
  • (C) ---
  • (D) ---

A

Admin • 802.91K Points
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Q. Which of the following pump is suitable for small discharge and high heads?

  • (A) Centrifugal pump
  • (B) Axial flow pump
  • (C) Mixed flow pump
  • (D) Reciprocating pump

A

Admin • 802.91K Points
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Q. In a Kaplan turbine runner, the number of blades are generally between

  • (A) 2 to 4
  • (B) 4 to 8
  • (C) 8 to 16
  • (D) 16 to 24

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