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4

The stability of a dam is checked for

A. Tension at the base

B. Overturning of the wall or dam

C. Sliding of the wall or dam

D. All of these

Correct Answer :

D. All of these


Related Questions

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4

The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.

A. Less than

B. More than

C. Equal to

D. None of these

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4

If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

A. 0.417 H5/2

B. 1.417 H5/2

C. 4.171 H5/2

D. 7.141 H5/2

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4

For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal

A. Ratio of inertial force to force due to viscosity

B. Ratio of inertial force to force due to gravitation

C. Ratio of inertial force to force due to surface tension

D. All the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity

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4

A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to

A. 10 kg

B. 100 kg

C. 1000 kg

D. 1 kg

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4

Froude's number is the ratio of inertia force to

A. Pressure force

B. Elastic force

C. Gravity force

D. Surface tension force

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4

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle θ. Sensitivity of inclined tube to sensitivity of Utube is equal to

A. Sinθ

B. 1/Sinθ

C. Cosθ

D. 1/Cosθ

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4

The point at which the resultant pressure on an immersed surface acts, is known as

A. Centre of gravity

B. Centre of depth

C. Centre of pressure

D. Centre of immersed surface

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4

The critical depth meter is used to measure

A. Velocity of flow in an open channel

B. Depth of flow in an open channel

C. Hydraulic jump

D. Depth of channel

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4

The tangential velocity of the water element having a free vortex is

A. Directly proportional to its distance from the centre

B. Inversely proportional to its distance from the centre

C. Directly proportional to its (distance)2 from the centre

D. Inversely proportional to its (distance)2 from the centre

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4

Specific weight of water in S.I. units is equal to

A. 1000 N/m3

B. 10000 N/m3

C. 9.81 × 103 N/m3

D. 9.81 × 10⁶ N/m3

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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 discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

A. 0.34 times

B. 0.67 times

C. 0.81 times

D. 0.95 times

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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

The value of coefficient of discharge is __________ the value of coefficient of velocity.

A. Less than

B. Same as

C. More than

D. None of these

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4

The value of mass density in kg-sec-V-m⁴ for water at 0°C is

A. 1

B. 1000

C. 100

D. 101.9

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4

Euler's number is the ratio of __________ force to pressure force.

A. Inertia

B. Gravity

C. Viscous

D. None of these

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4

Pressure of the order of 10 torr can be measured by

A. Bourdon tube

B. Pirani Gauge

C. Micro-manometer

D. Lonisation gauge

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4

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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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 pressure of a liquid measured with the help of a Piezometer tube is

A. Vacuum pressure

B. Gauge pressure

C. Absolute pressure

D. Atmospheric pressure

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4

One poise is equal to

A. 0.1 N-s/m2

B. 1 N-s/m2

C. 10 N-s/m2

D. 100 N-s/m2

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4

The flow in a pipe is neither laminar nor turbulent when Reynold number is

A. Less than 2000

B. Between 2000 and 2800

C. More than 2800

D. None of these

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4

Practical fluids

A. Are viscous

B. Possess surface tension

C. Are compressible

D. Possess all the above properties

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4

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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4

For a body floating in a liquid the normal pressure exerted by the liquid acts at

A. Bottom surface of the body

B. C.G. of the body

C. Metacentre

D. All points on the surface of the body

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4

One stoke is equal to

A. 10-2 m2/s

B. 10-3 m2/s

C. 10-4 m2/s

D. 10-6 m2/s

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4

The hammer blow in pipes occurs when

A. There is excessive leakage in the pipe

B. The pipe bursts under high pressure of fluid

C. The flow of fluid through the pipe is suddenly brought to rest by closing of the valve

D. The flow of fluid through the pipe is gradually brought to rest by closing of the valve

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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

For measuring flow by a Venturimeter, if should be installed in

A. Vertical line

B. Horizontal line

C. Inclined line with flow downward

D. In any direction and in any location

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4

The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

A. 1/2 × depth

B. 1/2 × breadth

C. 1/2 × sloping side

D. 1/4 × (depth + breadth)