The centre of gravity of the volume of the liquid displaced is called

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The centre of gravity of the volume of the liquid displaced is called

A. Centre of pressure

B. Centre of buoyancy

C. Metacentre

D. None of these

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The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to

A. 1 Pa

B. 91 Pa

C. 981 Pa

D. 9810 Pa

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The viscosity of water is __________ than that of mercury.

A. Higher

B. Lower

C. Same as

D. None of these

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The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

A. Surface tension

B. Compressibility

C. Capillarity

D. 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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Ratio of inertia force to elastic force is known as

A. Mach number

B. Froude number

C. Reynolds number

D. Weber's number

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A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

A. Coincides with

B. Lies below

C. Lies above

D. None of these

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Reynold's number is the ratio of the inertia force to the

A. Surface tension force

B. Viscous force

C. Gravity force

D. Elastic force

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Water is a __________ fluid.

A. Real

B. Ideal

C. Newtonian

D. Non-Newtonian

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The viscosity of water at 20°C is

A. One stoke

B. One centistoke

C. One poise

D. One centipoise

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Kinematic viscosity is equal to

A. Dynamic viscosity/density

B. Dynamic viscosity × density

C. Density/dynamic viscosity

D. 1/dynamic viscosity × density

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If the depth of water in an open channel is less than the critical depth, the flow is called

A. Critical flow

B. Turbulent flow

C. Tranquil flow

D. Torrential flow

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Rain drops are spherical because of

A. Viscosity

B. Air resistance

C. Surface tension forces

D. Atmospheric pressure

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Coefficient of velocity is defined as the ratio of

A. Actual velocity of jet at vena contracta to the theoretical velocity

B. Area of jet at vena contracta to the area of orifice

C. Actual discharge through an orifice to the theoretical discharge

D. None of the above

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When a body is placed over a liquid, it will sink down if

A. Gravitational force is equal to the up-thrust of the liquid

B. Gravitational force is less than the up-thrust of the liquid

C. Gravitational force is more than the up-thrust of the liquid

D. None of the above

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An error of 1% in measuring head over the apex 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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Bernoulli's equation is applied to

A. Venturimeter

B. Orifice meter

C. Pitot tube

D. All of these

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According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

A. A × √(m × i)

B. C × √(m × i)

C. AC × √(m × i)

D. mi × √(A × C)

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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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A thick liquid like syrup has a __________ viscosity than a light liquid like water.

A. Lesser

B. Greater

C. Same

D. None of these

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Kinematic viscosity is dependent upon

A. Pressure

B. Distance

C. Density

D. Flow

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If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

A. h

B. wh

C. w/h

D. h/w

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The atmospheric pressure with rise in altitude decreases

A. Linearly

B. First slowly and then steeply

C. First steeply and then gradually

D. Unpredictable

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All the terms of energy in Bernoulli's equation have dimension of

A. Energy

B. Work

C. Mass

D. Length

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The bulk modulus of elasticity with increase in pressure

A. Increases

B. Decreases

C. Remain constant

D. Increases first up to certain limit and then decreases

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Select the correct statement

A. Weber's number is the ratio of inertia force to elastic force.

B. Weber's number is the ratio of gravity force to surface tension force.

C. Weber's number is the ratio of viscous force to pressure force.

D. Weber's number is the ratio of inertia force to surface tension force.

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The resultant upward pressure of the fluid on an immersed body is called

A. Up-thrust

B. Buoyancy

C. Center of pressure

D. All the above are correct

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According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

A. (2/3) × C_d (L - nH) × √(2gh)

B. (2/3) × C_d (L - 0.1nH) × √(2g) × H^3/2

C. (2/3) × C_d (L - nH) × √(2g) × H²

D. (2/3) × C_d (L - nH) × √(2g) × H^5/2

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A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

A. 0.83

B. 0.6

C. 0.4

D. 0.3

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The power transmitted through a pipe is (where w = Specific weight in N/m³, and Q = Discharge in m³/s)

A. w × Q × H

B. w × Q × hf

C. w × Q (H - hf)

D. w × Q (H + hf)

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The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream

A. Keeps on increasing

B. Keeps on decreasing

C. Remain constant

D. May increase/decrease

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Accepted Answer

B. Centre of buoyancy

The centre of gravity of the volume of the liquid displaced is called

Correct Answer :

Show all Fluid Mechanics MCQ

Related Questions

The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to

The viscosity of water is __________ than that of mercury.

The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

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

Ratio of inertia force to elastic force is known as

A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

Reynold's number is the ratio of the inertia force to the

Water is a __________ fluid.

The viscosity of water at 20°C is

Kinematic viscosity is equal to

If the depth of water in an open channel is less than the critical depth, the flow is called

Rain drops are spherical because of

Coefficient of velocity is defined as the ratio of

When a body is placed over a liquid, it will sink down if

An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.

Bernoulli's equation is applied to

According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

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 thick liquid like syrup has a __________ viscosity than a light liquid like water.

Kinematic viscosity is dependent upon

If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

The atmospheric pressure with rise in altitude decreases

All the terms of energy in Bernoulli's equation have dimension of

The bulk modulus of elasticity with increase in pressure

Select the correct statement

The resultant upward pressure of the fluid on an immersed body is called

According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

The power transmitted through a pipe is (where w = Specific weight in N/m³, and Q = Discharge in m³/s)

The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream

Also checkout

The centre of gravity of the volume of the liquid displaced is called

Correct Answer :

Show all Fluid Mechanics MCQ

Related Questions

The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to

The viscosity of water is __________ than that of mercury.

The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

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

Ratio of inertia force to elastic force is known as

A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

Reynold's number is the ratio of the inertia force to the

Water is a __________ fluid.

The viscosity of water at 20°C is

Kinematic viscosity is equal to

If the depth of water in an open channel is less than the critical depth, the flow is called

Rain drops are spherical because of

Coefficient of velocity is defined as the ratio of

When a body is placed over a liquid, it will sink down if

An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.

Bernoulli's equation is applied to

According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

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 thick liquid like syrup has a __________ viscosity than a light liquid like water.

Kinematic viscosity is dependent upon

If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

The atmospheric pressure with rise in altitude decreases

All the terms of energy in Bernoulli's equation have dimension of

The bulk modulus of elasticity with increase in pressure

Select the correct statement

The resultant upward pressure of the fluid on an immersed body is called

According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)

The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream

Also checkout

The power transmitted through a pipe is (where w = Specific weight in N/m³, and Q = Discharge in m³/s)