Fluid Mechanics MCQs with answers Page - 5

Here, you will find a collection of MCQ questions on Fluid Mechanics. 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. Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the

  • (A) Pressure
  • (B) Temperature
  • (C) Neither A nor B
  • (D) Both A & B

A

Admin • 802.91K Points
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Q. For pipes that must be broken at intervals for maintenance, the connector used should be a/an

  • (A) Elbow
  • (B) Reducer
  • (C) Tee
  • (D) Union

A

Admin • 802.91K Points
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Q. With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)

  • (A) Remains constant
  • (B) Increases exponentially
  • (C) Increases linearly
  • (D) Decreases

A

Admin • 802.91K Points
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Q. Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an

  • (A) Pitot tube
  • (B) Venturimeter
  • (C) Orificemeter
  • (D) Rotameter

A

Admin • 802.91K Points
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Q. Interstage coolers are provided in a multistage compressor to

  • (A) Save power in compressing a given volume to a given pressure
  • (B) Cool the delivered air
  • (C) Achieve the exact delivery pressure
  • (D) None of these

A

Admin • 802.91K Points
Coach

Q. Purpose of relief valve in a reciprocating pump is to

  • (A) Control the rate of discharge
  • (B) Reduce the discharge pressure
  • (C) Facilitate unidirectional flow of liquid
  • (D) Protect the pump against developing excessive pressure

A

Admin • 802.91K Points
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Q. Function of air vessel provided in a reciprocating pump is to

  • (A) Increase the pump efficiency
  • (B) Avoid the necessity of priming
  • (C) Reduce the danger of cavitation
  • (D) Reduce discharge fluctuation

A

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Q. The speed of sound in an ideal gas varies as the

  • (A) Pressure
  • (B) Temperature
  • (C) Density
  • (D) None of these

A

Admin • 802.91K Points
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Q. The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the

  • (A) Length is shorter
  • (B) Throat diameter is more
  • (C) Sudden expansion of flow in the downstream occurs
  • (D) Distance between the throat and the inlet is more

A

Admin • 802.91K Points
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Q. While starting a centrifugal pump, its delivery valve should be kept

  • (A) Opened
  • (B) Closed
  • (C) Either opened or closed ; it does not make any difference
  • (D) Either opened or closed; depending on the fluid viscosity

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