Hydraulics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Hydraulics, a fundamental topic in the field of Civil Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Hydraulics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Hydraulics mcq questions that explore various aspects of Hydraulics problems. Each MCQ is crafted to challenge your understanding of Hydraulics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Civil Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Hydraulics MCQs are your pathway to success in mastering this essential Civil Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Hydraulics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Hydraulics knowledge to the test? Let's get started with our carefully curated MCQs!

Hydraulics MCQs | Page 14 of 29

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Q131.
The ratio of frictional factor and coefficient of friction used in general equation for a head loss in a pipe, is

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (d).4
Q132.
Flow in pipes is turbulent if Reynold number is

a.

less than 2100

b.

more than 3000

c.

between 2100 and 3000

d.

none of these.

Discuss
Answer: (b).more than 3000
Q133.
Back water curve is caused if

a.

friction head loss is more than the bed slope

b.

pressure is due to weir in the channel

c.

there is an increase in width of the channel

d.

none of these.

Discuss
Answer: (b).pressure is due to weir in the channel
Q134.
Power transmitted through a pipe is maximum when friction head loss, is

a.

one-half of the total head supplied

b.

one-third of the total head supplied

c.

one-fouth of the total head supplied

d.

equal to the total head supplied.

Discuss
Answer: (b).one-third of the total head supplied
Q135.
To avoid vapourisation, pipe lines are laid over the ridge so that these are above the hydraulic gradient line, not more than

a.

2.4 m

b.

6.4 m

c.

10.0 m

d.

5.0 m.

Discuss
Answer: (b).6.4 m
Q136.
A jet projected at an angle of 45θ, 40 m from the foot of a vertical column, just reaches the top of the column. The height of the column is

a.

15 m

b.

20 m

c.

30 m

d.

40 m

Discuss
Answer: (d).40 m
Q137.
If Cv, Cc, Cd and Cr are the hydraulic coefficients of an orifice, then

a.

Cd = Cc . Cv

b.

Cr = 1 + Cv²/Cd

c.

Cv = Cc + Cd

d.

Cc = Cv/Cd

Discuss
Answer: (a).Cd = Cc . Cv
Q138.
The specific weight of water is 1000 kg/m³

a.

at normal pressure of 760 mm

b.

at 4°C temperature

c.

at mean sea level

d.

all the above.

Discuss
Answer: (d).all the above.
Q139.
Specific weight of liquid

a.

remains constant at every place

b.

does not remain constant at every place

c.

varies from place to place on the earth

d.

does not vary on any other planet.

Discuss
Answer: (d).does not vary on any other planet.
Q140.
Manning's formula is used for

a.

flow in open channels

b.

head loss due to friction in open channels

c.

head loss due to friction in pipes flowing full

d.

flow in pipes.

Discuss
Answer: (b).head loss due to friction in open channels
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