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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

Correct Answer :

A. 15.3 m


Related Questions

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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

Buoyant force is

A. The resultant force acting on a floating body

B. The resultant force on a body due to the fluid surrounding it

C. Equal to the volume of liquid displaced

D. The force necessary to maintain equilibrium of a submerged body

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4

A flow whose streamline is represented by a curve, is called

A. One-dimensional flow

B. Two-dimensional flow

C. Three-dimensional flow

D. Four-dimensional flow

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4

The velocity at which the laminar flow stops, is known as

A. Velocity of approach

B. Lower critical velocity

C. Higher critical velocity

D. None of these

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4

In a free nappe,

A. The pressure below the nappe is atmospheric

B. The pressure below the nappe is negative

C. The pressure above the nappe is atmospheric

D. The pressure above the nappe is negative

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4

A fluid having no viscosity is known as

A. Real fluid

B. Ideal fluid

C. Newtonian fluid

D. Non-Newtonian fluid

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4

The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

A. 2100

B. 2700

C. 10,000

D. 21,000

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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 an isothermal atmosphere, the pressure

A. Decreases linearly with elevation

B. Remain constant

C. Varies in the same way as the density

D. Increases exponentially with elevation

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4

Falling drops of water become spheres due to the property of

A. Adhesion

B. Cohesion

C. Surface tension

D. Viscosity

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4

A flow whose streamline is represented by a straight line, is called __________ dimensional flow.

A. One

B. Two

C. Three

D. Four

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4

Cavitation is caused by

A. High velocity

B. High pressure

C. Weak material

D. Low pressure

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4

The loss of head at exit of 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

Choose the wrong statement

A. The horizontal component of the hydrostatic force on any surface is equal to the normal force on the vertical projection of the surface

B. The horizontal component acts through the center of pressure for the vertical projection

C. The vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area

D. The vertical component passes through the center of pressure of the volume

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4

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

A. N-m/s2

B. N-s/m2

C. Poise

D. Stoke

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4

A venturi-flume is used to measure

A. Pressure of liquid

B. Discharge of liquid

C. Pressure difference between two points in a channel

D. Pressure difference between two points in a pipe

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4

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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4

Center of pressure on an inclined plane is

A. At the Centroid

B. Above the Centroid

C. Below the Centroid

D. At metacentre

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4

The pressure measured with the help of a pressure gauge is called

A. Atmospheric pressure

B. Gauge pressure

C. Absolute pressure

D. Mean pressure

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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 meatcentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is

A. 4.1 s

B. 5.2 s

C. 10.4 s

D. 14.1 s

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4

The divergent portion of a Venturimeter is made longer than convergent portion in order to

A. Avoid the tendency of breaking away the stream of liquid

B. To minimise frictional losses

C. Both (A) and (B)

D. None of these

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4

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

A. Energy

B. Work

C. Mass

D. Length

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4

Density of water is maximum at

A. 0° C

B. 0° K

C. 4° C

D. 100° C

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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

The pressure less than atmospheric pressure is known as

A. Suction pressure

B. Vacuum pressure

C. Negative gauge pressure

D. All of these

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4

The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as

A. One dimensional flow

B. Uniform flow

C. Steady flow

D. Turbulent flow

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4

Mercury does not wet glass. This is due to property of liquid known as

A. Adhesion

B. Cohesion

C. Surface tension

D. Viscosity

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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

An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.

A. Equal to

B. Directly proportional

C. Inversely proportional

D. None of these