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 16 of 29

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Q151.
Pick up the correct statement from the following :

a.

Total energy gradient is the graphical representation of the total head at any section of a pipe line

b.

Vertical distance between the total energy line and hydraulic grade line is equal to the velocity head

c.

Vertical distance between the total energy line and total energy gradient represents loss of head

d.

all the above.

Discuss
Answer: (d).all the above.
Q152.
Uniform flow is said to occur when

a.

size and shape of the cross-section in a particular length remain constant

b.

size and shape of the cross-section change along a length

c.

frictional loss in the particular length of the channel will the more than the drop in its elevation

d.

frictional loss in the particular length of the channel, will be less than the drop in elevation.

Discuss
Answer: (a).size and shape of the cross-section in a particular length remain constant
Q153.
For the most economical trapezoidal section of a channel with regards to discharge, the required condition, is

a.

half of top width = sloping side

b.

hydraulic depth = half the depth

c.

perpendiculars drawn from the centre of the top width on to the bottom sloping side, are all equal

d.

all the above.

Discuss
Answer: (d).all the above.
Q154.
Molecules of fluids get attracted due to

a.

capillarity action

b.

surface tension

c.

adhesion

d.

cohesion

Discuss
Answer: (c).adhesion
Q155.
Cappoletti weir is a

a.

rectangular weir whose length is kept 3 times the height of the water above sill

b.

triangular weir whose notch angle is 90°

c.

trapezoidal weir, whose sides slope 1 horizontal to 2 verticals

d.

a combination of rectangular and triangular weirs.

Discuss
Answer: (c).trapezoidal weir, whose sides slope 1 horizontal to 2 verticals
Q156.
On an inclined plane, centre of pressure is located

a.

at the centroid

b.

above the centroid

c.

below the centroid

d.

anywhere.

Discuss
Answer: (c).below the centroid
Q157.
Most economical section of a triangular channel, is

a.

equilateral triangle

b.

right angled triangle

c.

isosceles triangle with 45° vertex angle

d.

right angled triangle with equal sides.

Discuss
Answer: (d).right angled triangle with equal sides.
Q158.
In an open tube, free surface of mercury remains

a.

horizontal

b.

curved upwards

c.

curved downwards

d.

none of these.

Discuss
Answer: (c).curved downwards
Q159.
The value of momentum correction factor (ฮฒ) for a laminar flow through a circular pipe, is

a.

1/2

b.

2/3

c.

3/4

d.

4/3

Discuss
Answer: (d).4/3
Q160.
Manometers are used to measure

a.

pressure in water channels, pipes etc.

b.

difference in pressure at two points

c.

atmospheric pressure

d.

very low pressure.

Discuss
Answer: (a).pressure in water channels, pipes etc.
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