Hydraulic Machines MCQs with answers Page - 4

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. A Kaplan turbine is an axial flow reaction turbine.

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

A

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Q. The action of a centrifugal pump is that of a reversed reaction turbine.

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

A

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Q. Geometric similarity is said to exist between the model and the prototype, if both of them

  • (A) have identical velocities
  • (B) are equal in size and shape
  • (C) are identical in shape, but differ only in size
  • (D) have identical forces

A

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Q. A Pelton wheel working under a constant head and discharge, has maximum efficiency when the speed ratio is

  • (A) 0.26
  • (B) 0.36
  • (C) 0.46
  • (D) 0.56

A

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Q. Delivery head of water of a centrifugal pump is inversely proportional to diameter of its impeller.

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

A

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Q. The efficiency of a reaction turbine for a given head

  • (A) decreases
  • (B) increases
  • (C) ---
  • (D) ---

A

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Q. The undershot water wheels are those in which

  • (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

A

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Q. In the casing of a centrifugal pump, the kinetic energy of the water is converted into pressure energy before the water leaves the casing.

  • (A) True
  • (B) False
  • (C) ---
  • (D) ---

A

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Q. Head developed by a centrifugal pump is

  • (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

A

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Q. The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

  • (A) manometric efficiency
  • (B) mechanical efficiency
  • (C) overall efficiency
  • (D) volumetric efficiency

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