# Engineering/Civil Engineering -MCQS-Hydraulics Section 1 Sample Test,Sample questions

## Question: ``` An ideal flow of a liquid obeys```

1.Continuity equation

2.Newton's law of viscosity

3.Newton's second law of motion

4.dynamic viscosity law,

## Question: ``` A piezometer opening in pipes measures```

2.static pressure

3.total pressure

4.negative static pressure.

## Question: ``` A syphon is used```

1.to connect water reservoirs at different levels intervened by a hill

2.to supply water to a town from higher level to lower level

3.to fill up a tank with water at higher level from a lower level

4. none of these.

## Question: ``` Differential manometers are used to measure```

1. pressure in water channels, pipes, etc.

2. difference in pressure at two points

3.atmospheric pressure

4.very low pressure.

1.400 H.P.

2.450 H.P.

3.500 H.P.

4.550 H.P.

## Question: ``` The phenomenon occuring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream causing a distinct rise of liquid surface, is```

1.water hammer

2.hydraulic jump

3.critical discharge

4.none of these.

## Question: ``` When a body is totally or partially immersed in a fluid, it is buoyed up by a force equal to```

1. weight of the body

2.weight of the fluid displaced by the body

3.weight of the body and fluild displaced by the body

4.none of these.

## Question: `A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is`

1.less than 12.2 m of the water

2.more than 12.2 m of the water

3.equal of 12.2 m of water

4.none of these.

1.2

2.3

3.1 upon 2

4.1 upon 3

## Question: `An independent mass of a fluid does not posses`

1.elevation energy

2. kinetic energy

3.pressure energy

4.none of these.

## Question: `Bernoulli's equation assumes that`

1.fluid is non-viscous

2.fluid is homogeneous

4.all the above.

## Question: `Highest dam in India, is`

1.Bhakra dam

2.Hirakund dam

3.Nagarjuna Sagar dam

4. Iddiki dam.

## Question: `Hydrostatic pressure on a dam depends upon its`

1.length

2.depth

3.shape

4. both (b) and (c).

## Question: `If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm2, the pressure at a depth of 2.5 m, is`

1.1 metre of water

2. 2 metres of water

3.3 metres of water

4. 3.5 metres of water

## Question: `If the volume of a liquid weighing 3000 kg is 4 cubic metres, 0.75 is its`

1. specific weight

2.specific mass

3. specific gravity

4. none of these.

## Question: `﻿A pitot tube is used to measure`

1.pressure

2.difference in pressure

3. velocity of flow

4. none of these.

1.25%

2.33.30%

3.50%

4.66.67%.

## Question: `Most economical section of a circular channel for maximum discharge`

1.depth of water = 0.95 diameter of circular section

2.hydraulic mean depth = 0.286 diameter of circular section

3.wetted perimeter = 2.6 diameter of circular section

4. all the above.

## Question: `Reynold number is the ratio of initial force and`

1.viscosity

2.elasticity

3. gravitational force

4.surface tension.

## Question: `The horizontal component of the force on a curved surface is equal to`

1.weight of liquid vertically below the curved surface

2.force on a vetical projection of the curved surface

3. product of pressure at its centroid and the area

4. weight of liquid retained by the curved area.

## Question: `The maximum vacuum created at the summit of a syphon is`

1.2.7 m of water

2. 7.4 m of water

3. 5.5 m of water

4.none.

1.1.25

2.1.33

3.1.5

4.1.66

## Question: `The property of steam function ψ is :`

1.ψ is constant everwhere on any stream line

2. the flow around any path in the fluid is zero for continuous flow

3.the rate of change of ψ with distance in an arbitrary direction, is proportional to the component of velocity normal to that direction

4.all the above.

1.π

2.2π

3.3π

4.4π

1.0.5

2.0.75

3.1.25

4.2

## Question: `The shear stress distribution in viscous fluid through a circular pipe is :`

1.maximum at the centre

2.maximum at the inside of surface

3.same throughout the section

4. none of these.

1.1 to 4

2.1 to 3

3.1 to 2

4. 1 : 5

## Question: `The thickness of a sharp crested weir is kept less than`

1.one-third of the height of water on the sill

2.one-half of the height of water on the sill

3.one-fourth of the height of water on the sill

4.two-third of the height of water on the sill

## Question: `The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid, if`

1.area is horizontal

2.area is vertical

3. area is inclined

4.all the above.

## More MCQS

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