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 21 of 29

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Q201.
In a two dimensional flow if the components of the velocity are u = ax ; v = by, the point where no motion occurs, is known as

a.

critical point

b.

neutral point

c.

stagnation point

d.

stationary point

Discuss
Answer: (c).stagnation point
Q202.
Most economical section of a circular channel for maximum velocity, is if,

a.

depth of water = 0.810 diameter

b.

hydraulic mean depth = 0.304 diameter

c.

wetted perimeter = 2.245 diameters

d.

all the above.

Discuss
Answer: (d).all the above.
Q203.
When a liquid rotates at constant angular velocity about a vertical axis of a rigid body, the pressure

a.

increases linearly to its radial distance

b.

varies inversely as the altitude along any vertical line

c.

varies as the square of the radial distance

d.

decreases as the square of the radial distance

Discuss
Answer: (c).varies as the square of the radial distance
Q204.
For the two dimensional flow, the stream function is given by ฯˆ = 2xy. The velocity at a point (3, 4) is

a.

6 m/sec

b.

8 m/sec

c.

10 m/sec

d.

12 m/sec

Discuss
Answer: (c).10 m/sec
Q205.
A floating body attains stable equilibrium if its metacentre is

a.

at the centroid

b.

above the centroid

c.

below the centroid

d.

anywhere.

Discuss
Answer: (b).above the centroid
Q206.
The unit of the viscosity is

a.

kg sec/m²

b.

Newton sec per m²

c.

Newton-sec²/m³

d.

m² per sec.

Discuss
Answer: (b).Newton sec per m²
Q207.
A stepped notch is a combination of

a.

rectangular notches of different sizes

b.

triangular notches of different sizes

c.

rectangular and triangular notches

d.

all the above.

Discuss
Answer: (a).rectangular notches of different sizes
Q208.
The centre of pressure of a vertical plane immersed in a liquid is at

a.

centre of higher edge

b.

centre of lower edge

c.

centroid of the area

d.

none of these.

Discuss
Answer: (d).none of these.
Q209.
The ratio of the hydraulic radius of a pipe running full to the hydraulic radius of a square section of a channel whose side is equal to the diameter of the pipe, is

a.

1

b.

1/2

c.

1/3

d.

3/4

Discuss
Answer: (d).3/4
Q210.
A body of dimensions 1.5 m x 1.0 m x 2 m weighs 3000 kg in water. Its specific gravity is

a.

0.8

b.

0.9

c.

1.0

d.

1.1

Discuss
Answer: (d).1.1
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