Hydraulic Machines MCQs with answers Page - 5

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
Coach

Q. The cavitation in ahydraulic machine

  • (A) causes noise and vibration of various parts
  • (B) reduces the discharge of a turbine
  • (C) causes sudden drop in power output and efficiency
  • (D) all of the above

A

Admin • 802.91K Points
Coach

Q. The principle of jet propulsion is used in driving the ships and aeroplanes.

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

A

Admin • 802.91K Points
Coach

Q. Which of the following statement is correct as regard to water wheels?

  • (A) They have slow speeds.
  • (B) They are suitable even for low water heads
  • (C) They give constant efficiency, even if the discharge is not constant.
  • (D) all of the above

A

Admin • 802.91K Points
Coach

Q. If the ratio of corresponding velocities at corresponding points are equal, then the model and the prototype are said to have dynamic similarity.

  • (A) Right
  • (B) Wrong
  • (C) ---
  • (D) ---

A

Admin • 802.91K Points
Coach

Q. Dynamic 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) none of the above

A

Admin • 802.91K Points
Coach

Q. The speed of an imaginary turbine, identical with the fiven turbine, which will develop a unit power under a unit head, is known as

  • (A) normal speed
  • (B) unit speed
  • (C) specific speed
  • (D) none of these

A

Admin • 802.91K Points
Coach

Q. Which of the following pump is sucessfully used for lifting water to the wells?

  • (A) Centrifugal pump
  • (B) Reciprocating pump
  • (C) Jet pump
  • (D) Air-lift pump

A

Admin • 802.91K Points
Coach

Q. Which of the following pump is preferred for flood control and irrigation applications?

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

A

Admin • 802.91K Points
Coach

Q. In a centrifugal pump, the regulating valve is provided on the

  • (A) casing
  • (B) delivery pipe
  • (C) suction pipe
  • (D) impeller

A

Admin • 802.91K Points
Coach

Q. In a reciprocating pump, air vessels are fitted to the suction pipe and deliver pipe close to the cylinder of the pump.

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

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