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Civil Engineering Hydraulics/Fluid Mechanics Mock test – 3



Welcome to your Hydraulics Mock test - 3
Take an exciting test in Hydraulics/Fluid Mechanics
You have only 20 mins to complete the test (25 Questions)
Wish you all the best!!!
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1.

To avoid vapourisation, pipe lines are laid over the ridge so that these are above the hydraulic gradient line, not more than

1 out of 25
2.

f total head available at the inlet of pipe and f1 is the loss of head due to friction in the pipe, the maximum efficiency of transmission of power (ηmax) is

2 out of 25
3.

Manometers are used to measure

3 out of 25
4.

The following is not a laminar flow

4 out of 25
5.

Dimensions of the dynamic viscosity (μ) are

5 out of 25
6.

For exerting a pressure of 4.8 kg/cm2, the depth of oil (specific gravity 0.8), should be

6 out of 25
7.

Piezometers are used to measure

7 out of 25
8.

An error of 1% in measuring the head of water over the crest of a triangular notch, produces an error in the discharge which is equal to

8 out of 25
9.

Atmospheric pressure is equal to water column head of

9 out of 25
10.

Discharge over an ogee weir remains the same as that of

10 out of 25
11.

On an inclined plane, centre of pressure is located

11 out of 25
12.

Most economical section of a triangular channel, is

12 out of 25
13.

When no air is left below the nappe and water stream adheres to the down stream face of the weir, it is known as

13 out of 25
14.

Molecules of fluids get attracted due to

14 out of 25
15.

The best side slope for most economical trapezoidal section, is

15 out of 25
16.

The rise of the liquid along the walls of a revolving cylinder above the initial level, is

16 out of 25
17.

Cappoletti weir is a

17 out of 25
18.

In an open tube, free surface of mercury remains

18 out of 25
19.

To avoid an interruption in the flow of a syphon, an air vessel is provided

19 out of 25
20.

The value of momentum correction factor (β) for a laminar flow through a circular pipe, is

20 out of 25
21.

Shear stress is directly proportional to

21 out of 25
22.

For the flow of liquid from an open ended tube (or nozzle) leading to the formation of spray of liquid drops, the number generally applied, is

22 out of 25
23.

If velocities of fluid particles vary from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be

23 out of 25
24.

Uniform flow is said to occur when

24 out of 25
25.

Fluids change the volume under external presssure due to

25 out of 25









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