The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

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The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

A. Equal to

B. Double

C. Three to four times

D. Five to six times

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Surface tension

A. Acts in the plane of the interface normal to any line in the surface

B. Is also known as capillarity

C. Is a function of the curvature of the interface

D. Decreases with fall in temperature

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The increase of temperature results in

A. Increase in viscosity of gas

B. Increase in viscosity of liquid

C. Decrease in viscosity of gas

D. Decrease in viscosity of liquid

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A pressure of 25 m of head of water is equal to

A. 25 kN/ m²

B. 245 kN/ m²

C. 2500 kN/m²

D. 2.5 kN/ m²

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A flow through an expanding tube at constant rate is called

A. Steady uniform flow

B. Steady non-uniform flow

C. Unsteady uniform flow

D. Unsteady non-uniform flow

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The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

A. Expands

B. Does not change

C. Contracts

D. None of these

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Two dimensional flows occurs when

A. The direction and magnitude of the velocity at all points are identical

B. The velocity of successive fluid particles, at any point, is the same at successive periods of time

C. The magnitude and direction of the velocity do not change from point to point in the fluid

D. The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

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An open vessel of water is accelerated up an inclined plane. The free water surface will

A. Be horizontal

B. Make an angle in direction of inclination of inclined plane

C. Make an angle in opposite direction to inclination of inclined plane

D. Any one of above is possible

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Center of buoyancy is the

A. Centroid of the displaced volume of fluid

B. Center of pressure of displaced volume

C. Does not exist

D. None of the above

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The flow in which each liquid particle has a definite path and their paths do not cross each other is called

A. One dimensional flow

B. Streamline flow

C. Steady flow

D. Turbulent flow

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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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The ratio of absolute viscosity to mass density is known as

A. Specific viscosity

B. Viscosity index

C. Kinematic viscosity

D. Coefficient of viscosity

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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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Mercury is often used in barometer because

A. It is the best liquid

B. The height of barometer will be less

C. Its vapour pressure is so low that it may be neglected

D. Both (B) and (C)

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The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately

A. 5 mm

B. 10 mm

C. 20 mm

D. 30 mm

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The upper surface of a weir over which water flows is known is

A. Crest

B. Nappy

C. Sill

D. Weir top

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Working principle of dead weight pressure gauge tester is based on

A. Pascal's law

B. Dalton's law of partial pressure

C. Newton's law of viscosity

D. Avogadro's hypothesis

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A flow through a long pipe at decreasing rate is called __________ uniform flow.

A. Steady

B. Unsteady

C. Both A and B

D. None of these

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An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch,

A. 1 %

B. 1.5 %

C. 2 %

D. 2.5 %

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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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The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is

A. Directly proportional to (radius)²

B. Inversely proportional to (radius)²

C. Directly proportional to (radius)⁴

D. Inversely proportional to (radius)⁴

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According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.

A. Equal to

B. Directly proportional

C. Inversely proportional

D. None of these

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According to Bernoulli's equation

A. Z + p/w + v²/2g = constant

B. Z + p/w - v²/2g = constant

C. Z - p/w + v²/2g = constant

D. Z - p/w - v²/2g = constant

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The pressure of air __________ with the increase of height from the surface of the earth.

A. Does not change

B. Decreases

C. Increases

D. None of these

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The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)

A. 1/R_N

B. 4/R_N

C. 16/R_N

D. 64/R_N

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The units of kinematic viscosity are

A. Metres² per sec

B. kg sec/metre

C. Newton-sec per metre

D. Newton-sec per metre

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A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

A. Increase

B. Decrease

C. Remain same

D. Increase/decrease depending on depth of immersion

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The speed of sound in a ideal gas varies directly as its

A. Absolute temperature

B. Temperature

C. Density

D. Modulus of elasticity

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Which of the following manometer has highest sensitivity?

A. U-tube with water

B. Inclined U-tube

C. U-tube with mercury

D. Micro-manometer with water

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If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water

A. 51 cm

B. 50 cm

C. 52 cm

D. 52.2 cm

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The length AB of a pipe ABC in which the liquid is flowing has diameter (d₁) and is suddenly contracted to diameter (d₂) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is

A. v₁²/2g

B. v₂²/2g

C. 0.5 v₁²/2g

D. 0.375 v₂²/2g

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Accepted Answer

C. Three to four times

The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

Correct Answer :

Show all Fluid Mechanics MCQ

Related Questions

Surface tension

The increase of temperature results in

A pressure of 25 m of head of water is equal to

A flow through an expanding tube at constant rate is called

The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

Two dimensional flows occurs when

An open vessel of water is accelerated up an inclined plane. The free water surface will

Center of buoyancy is the

The flow in which each liquid particle has a definite path and their paths do not cross each other is called

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

The ratio of absolute viscosity to mass density is known as

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

Mercury is often used in barometer because

The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately

The upper surface of a weir over which water flows is known is

Working principle of dead weight pressure gauge tester is based on

A flow through a long pipe at decreasing rate is called __________ uniform flow.

An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch,

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

The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is

According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.

According to Bernoulli's equation

The pressure of air __________ with the increase of height from the surface of the earth.

The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)

The units of kinematic viscosity are

A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

The speed of sound in a ideal gas varies directly as its

Which of the following manometer has highest sensitivity?

If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water

The length AB of a pipe ABC in which the liquid is flowing has diameter (d₁) and is suddenly contracted to diameter (d₂) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is

Also checkout

The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

Correct Answer :

Show all Fluid Mechanics MCQ

Related Questions

Surface tension

The increase of temperature results in

A pressure of 25 m of head of water is equal to

A flow through an expanding tube at constant rate is called

The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

Two dimensional flows occurs when

An open vessel of water is accelerated up an inclined plane. The free water surface will

Center of buoyancy is the

The flow in which each liquid particle has a definite path and their paths do not cross each other is called

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

The ratio of absolute viscosity to mass density is known as

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

Mercury is often used in barometer because

The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately

The upper surface of a weir over which water flows is known is

Working principle of dead weight pressure gauge tester is based on

A flow through a long pipe at decreasing rate is called __________ uniform flow.

An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch,

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

The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is

According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.

According to Bernoulli's equation

The pressure of air __________ with the increase of height from the surface of the earth.

The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)

The units of kinematic viscosity are

A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

The speed of sound in a ideal gas varies directly as its

Which of the following manometer has highest sensitivity?

If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water

The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is

Also checkout

The length AB of a pipe ABC in which the liquid is flowing has diameter (d₁) and is suddenly contracted to diameter (d₂) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is