Fluid Mechanics MCQs with answers Page - 11

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 • 833.24K Points
Coach

Q. In magnetic flow meters, voltage generation is

  • (A) Proportional to the fluid velocity
  • (B) Due to the motion of conducting fluid through an externally generated uniform field
  • (C) Both A and B
  • (D) Neither A nor B

A

Admin • 833.24K Points
Coach

Q. Net positive suction head (NPSH) of a centrifugal pump must be

  • (A) Greater than the vapour pressure of the liquid
  • (B) Less than the vapour pressure of the liquid
  • (C) Equal to the vapour pressure of the liquid
  • (D) Less than barometric pressure

A

Admin • 833.24K Points
Coach

Q. Power loss in an orificemeter is __________ that in a venturimeter.

  • (A) Less than
  • (B) More than
  • (C) Same as
  • (D) Data insufficient, cannot be predicted

A

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Q. For the production of very high vacuum, a __________ pump is normally used.

  • (A) Diffusion
  • (B) Jet ejector
  • (C) Piston
  • (D) Centrifugal

A

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Q. Drag co-efficient in hindered settling is __________ that in free settling.

  • (A) Less than
  • (B) Equal to
  • (C) Not necessarily greater than
  • (D) Always greater than

A

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Q. Centre of pressure in an immersed body is __________ the centre of gravity.

  • (A) At
  • (B) Below
  • (C) Above
  • (D) Either above or below; depends on the liquid density

A

Admin • 833.24K Points
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Q. A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be

  • (A) 100
  • (B) 160
  • (C) 200
  • (D) 320

A

Admin • 833.24K Points
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Q. Drag co-efficient for flow past immersed body is the ratio of __________ to the product of velocity head and density.

  • (A) Shear stress
  • (B) Shear force
  • (C) Average drag per unit projected area
  • (D) None of these

A

Admin • 833.24K Points
Coach

Q. The co-efficient of discharge of an orificemeter is a function of

  • (A) Reynolds number at the orifice
  • (B) Ratio of orifice dia to pipe dia
  • (C) Both A and B
  • (D) None of the above parameters, and has a constant value of 0.61

A

Admin • 833.24K Points
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Q. The exit cone angle in case of a standard venturimeter is __________ the entrance cone angle.

  • (A) Smaller than
  • (B) Equal to
  • (C) Greater than
  • (D) Either A or C

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