# Test: Hydraulics & Fluid Mechanics - 4

## 25 Questions MCQ Test Additional Documents & Tests for Civil Engineering (CE) | Test: Hydraulics & Fluid Mechanics - 4

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Attempt Test: Hydraulics & Fluid Mechanics - 4 | 25 questions in 25 minutes | Mock test for Civil Engineering (CE) preparation | Free important questions MCQ to study Additional Documents & Tests for Civil Engineering (CE) for Civil Engineering (CE) Exam | Download free PDF with solutions
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### The Newton's law of resistance is based on the assumption that the

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QUESTION: 4

A weir is usually made of masonry or concrete.

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QUESTION: 5

The Euler's equation for the motion of liquids is based upon the assumption that

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QUESTION: 6

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

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QUESTION: 7

When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as

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QUESTION: 8

The Newton's law of resistance is based on the assumption that the

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QUESTION: 9

The Euler's equation for the motion of liquids is based upon the assumption that

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QUESTION: 10

A weir is usually made of masonry or concrete.

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QUESTION: 11

If a body floating in a liquid does not return back to its original position, and heels farther "away when given a small angular displacement, the body is said to be in neutral equilibrium.

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QUESTION: 12

The length of the divergent cone in a venturimeter is __________ that of the convergent cone.

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QUESTION: 13

A flow through a long pipe at constant rate is called

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QUESTION: 14

The volume per unit mass of a liquid is called specific volume.

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QUESTION: 15

In an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water.

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QUESTION: 16

In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

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QUESTION: 17

Viscous force is the __________ of shear stress due to viscosity and cross-sectionar area of flow.

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QUESTION: 18

The density of air is same at different heights.

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QUESTION: 19

A body floating in a liquid is said to be in a stable equilibrium, if its metacentre coincides with its centre of gravity.

Solution:

For a floating body

Metacentre above centre of gravity→ Stable Equilibrium

Metacentre coincides centre of gravity→ Neutral Equilibrium

Metacentre below centre of gravity→ Unstable Equilibrium

For a submerged body

Centre of buoyancy above centre of gravity→ Stable Equilibrium

Centre of buoyancy coincides centre of gravity→ Neutral Equilibrium

Centre of buoyancy below centre of gravity→ Unstable Equilibrium

QUESTION: 20

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)

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QUESTION: 21

The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)

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QUESTION: 22

When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)

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QUESTION: 23

A flow through an expanding tube at increasing rate is called unsteady non-uniform flow.

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QUESTION: 24

Water is __________ liquid.

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QUESTION: 25

With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will

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