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4

A manometer is used to measure

A. Atmospheric pressure

B. Pressure in pipes and channels

C. Pressure in Venturimeter

D. Difference of pressures between two points in a pipe

Correct Answer :

B. Pressure in pipes and channels


Related Questions

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4

The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.

A. Decreases

B. Increases

C. Remain same

D. None of these

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4

Piezometer is used to measure

A. Pressure in pipe, channels etc.

B. Atmospheric pressure

C. Very low pressures

D. Difference of pressure between two points

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4

Alcohol is used in manometers because

A. It has low vapour pressure

B. It is clearly visible

C. It has low surface tension

D. It can provide longer column due to low density

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4

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

A. The weight of the body

B. More than the weight of the body

C. Less than the weight of the body

D. Weight of the fluid displaced by the body

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4

The property of a fluid which enables it to resist tensile stress is known as

A. Compressibility

B. Surface tension

C. Cohesion

D. Adhesion

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4

Surface energy per unit area of a surface is numerically equal to

A. Atmospheric pressure

B. Surface tension

C. Force of adhesion

D. Force of cohesion

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4

The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)

A. 2gH

B. H × √(2g)

C. 2g × √H

D. √(2gh)

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4

For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called

A. Continuity equation

B. Bernoulli's equation

C. Pascal's law

D. Archimedess principle

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4

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

A. Specific weight

B. Specific mass

C. Specific gravity

D. Specific density

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4

When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

A. 1.84 (L - 0.1nH)H3/2

B. 1.84 (L - nH)H2

C. 1.84 (L - 0.1nH)H5/2

D. 1.84 (L - nH)H3

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4

True one-dimensional flow 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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4

The velocity corresponding to Reynold number of 2800, is called

A. Sub-sonic velocity

B. Super-sonic velocity

C. Lower critical velocity

D. Higher critical velocity

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4

The weight 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 two important forces for a floating body are

A. Buoyancy, gravity

B. Buoyancy, pressure

C. Buoyancy, inertial

D. Inertial, gravity

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4

For a floating body to be in equilibrium

A. Meta centre should be above e.g.

B. Centre of buoyancy and e.g. must lie on same vertical plane

C. A righting couple should be formed

D. All of the above

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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

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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4

General energy equation holds for

A. Steady flow

B. Turbulent flow

C. Laminar flow

D. Non-uniform flow

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The equation of continuity holds good when the flow

A. Is steady

B. Is one dimensional

C. Velocity is uniform at all the cross sections

D. All of the above

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4

Water is a __________ fluid.

A. Real

B. Ideal

C. Newtonian

D. Non-Newtonian

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4

The Cipoletti weir is a __________ weir.

A. Rectangular

B. Triangular

C. Trapezoidal

D. Circular

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4

The flow in a pipe is 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

Liquids

A. Cannot be compressed

B. Occupy definite volume

C. Are not affected by change in pressure and temperature

D. None of the above

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4

One cubic metre of water weighs

A. 100 litres

B. 250 litres

C. 500 litres

D. 1000 litres

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Viscosity of water in comparison to mercury is

A. Higher

B. Lower

C. Same

D. Higher/lower depending on temperature

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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

The pressure at a point in a fluid will not be same in all the directions when the fluid is

A. Moving

B. Viscous

C. Viscous and static

D. Viscous and moving

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4

The flow of water through the hole in the bottom of a wash basin is an example of

A. Steady flow

B. Uniform flow

C. Free vortex

D. Forced vortex

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Cavitation will begin when

A. The pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid

B. Pressure becomes more than critical pressure

C. Flow is increased

D. Pressure is increased

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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