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Civil Engineering

Hydraulics And Fluid Mechanics MCQs

Practice Hydraulics And Fluid Mechanics MCQs for competitive exams.

Hydraulics And Fluid Mechanics MCQs

Practice questions from this topic.

Metacentric height for small values of angle of heel is the distance between the

  1. A. centre of gravity and centre of buoy-ancy
  2. B. centre of gravity and metacentre
  3. C. centre of buoyancy and metacentre
  4. D. free surface and centre of buoyancy
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A floating body is said to be in a state of stable equilibrium

  1. A. when its metacentric height is zero
  2. B. when the metacentre is above the centre of gravity
  3. C. when the metacentre is below the centre of gravity
  4. D. only when its centre of gravity is below its centre of buoyancy
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A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m 3 , then the weight of the block is

  1. A. 5 kN
  2. B. 10 kN
  3. C. 15 kN
  4. D. 20 kN
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A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is

  1. A. 9,000 kg
  2. B. 13,500 kg
  3. C. 18,000 kg
  4. D. 27,000 kg
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The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will

  1. A. increase
  2. B. remain unaffected
  3. C. may increase or decrease depending on the characteristics of liquid
  4. D. decrease
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Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is

  1. A. slightly less
  2. B. slightly more
  3. C. nearly half
  4. D. equal
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Differential monometer is used to measure

  1. A. pressure in pipes, channels etc
  2. B. atmospheric pressure
  3. C. very low pressure
  4. D. difference of pressure between two points
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The pitot tube is used to measure

  1. A. velocity at stagnation point
  2. B. stagnation pressure
  3. C. static pressure
  4. D. dynamic pressure
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A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

  1. A. 0.5
  2. B. 0.4
  3. C. 0.515
  4. D. 0.6
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The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe)

  1. A. 0.223 R
  2. B. 0.423 R
  3. C. 0.577 R
  4. D. 0.707 R
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The velocity of jet of water travelling out of opening in a tank filled with water is proportional to

  1. A. Head of water (h)
  2. B. h 2
  3. C. V/T
  4. D. h/2
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The speed of sound in a ideal gas varies directly as its

  1. A. absolute temperature
  2. B. temperature
  3. C. density
  4. D. modulus of elasticity
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