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What is the correct answer?

4

Bulk modulus of a fluid is the ratio of

A. Shear stress to shear strain

B. Increase in volume to the viscosity of fluid

C. Increase in pressure to the volumetric strain

D. Critical velocity to the viscosity of fluid

Correct Answer :

C. Increase in pressure to the volumetric strain


Related Questions

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4

A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

A. Equal to

B. Less than

C. More than

D. None of these

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4

Which of the following is dimensionless?

A. Specific weight

B. Specific volume

C. Specific speed

D. Specific gravity

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4

The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

A. wA

B. wx

C. wAx

D. wA/x

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4

The specific gravity of water is taken as

A. 0.001

B. 0.01

C. 0.1

D. 1

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4

The velocity of jet of water travelling out of opening in a tank filled with water is proportional to

A. Head of water (h)

B.

C. V/T

D. h/2

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4

The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)

A. wH/2

B. wH

C. wH2/2

D. wH2/4

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4

A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

A. H/3

B. H/2

C. 2H/3

D. 3H/4

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4

The mass per unit volume of a liquid at a standard temperature and pressure is called

A. Specific weight

B. Mass density

C. Specific gravity

D. None of these

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4

The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (ω) rad/s about its vertical axis, is

A. π w ω² r²/4g

B. π w ω² r³/4g

C. π w ω² r⁴/4g

D. π w ω² r²/2g

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4

The height of a water column equivalent to a pressure of 0.15 MPa is

A. 15.3 m

B. 25.3 m

C. 35.3 m

D. 45.3 m

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4

Bernoulli equation deals with the law of conservation of

A. Mass

B. Momentum

C. Energy

D. Work

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4

An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of

A. 1

B. 1.2

C. 0.8

D. 0.75

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4

The difference of pressure between the inside and outside of a liquid drop is

A. p = T × r

B. p = T/r

C. p = T/2r

D. p = 2T/r

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4

Rotameter is a device used to measure

A. Absolute pressure

B. Velocity of fluid

C. Flow

D. Rotation

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4

Fluid is a substance that

A. Cannot be subjected to shear forces

B. Always expands until it fills any container

C. Has the same shear stress at a point regardless of its motion

D. Cannot remain at rest under action of any shear force

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4

The continuity equation is connected with

A. Open channel/pipe flow

B. Compressibility of fluids

C. Conservation of mass

D. Steady/unsteady flow

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4

Specific weight of sea water is more that of pure water because it contains

A. Dissolved air

B. Dissolved salt

C. Suspended matter

D. All of the above

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4

The line of action of the buoyant force acts through the Centroid of the

A. Submerged body

B. Volume of the floating body

C. Volume of the fluid vertically above the body

D. Displaced volume of the fluid

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4

The pressure of the liquid flowing through the divergent portion of a Venturimeter

A. Remains constant

B. Increases

C. Decreases

D. Depends upon mass of liquid

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4

Barometer is used to measure

A. Velocity of liquid

B. Atmospheric pressure

C. Pressure in pipes and channels

D. Difference of pressure between two points in a pipe

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4

A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is

A. 2.89 kN

B. 8.29 kN

C. 9.28 kN

D. 28.9 kN

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4

Poise is the unit of

A. Surface tension

B. Capillarity

C. Viscosity

D. Shear stress in fluids

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4

Flow of water in a pipe about 3 metres in diameter can be measured by

A. Orifice plate

B. Venturimeter

C. Rotameter

D. Pitot tube

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4

A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

A. (bd²/12) + x

B. (d²/12 x) + x

C. b²/12 + x

D. d²/12 + x

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4

A flow is called super-sonic if the

A. Velocity of flow is very high

B. Discharge is difficult to measure

C. Mach number is between 1 and 6

D. None of these

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4

The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)

A. v²/2g

B. 0.5v²/2g

C. 0.375v²/2g

D. 0.75v²/2g

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4

The unit of kinematic viscosity in S. I. units is

A. N-m/s

B. N-s/m2

C. m2/s

D. N-m

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4

When the flow parameters at any given instant remain same at every point, then flow is said to be

A. Quasi-static

B. Steady state

C. Laminar

D. Uniform

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4

Bulk modulus of a fluid is the ratio of

A. Shear stress to shear strain

B. Increase in volume to the viscosity of fluid

C. Increase in pressure to the volumetric strain

D. Critical velocity to the viscosity of fluid

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4

The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

A. Directly

B. Inversely

C. Both A and B

D. None of these