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 24 of 29

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Q231.
The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particles at each point, is called

a.

path line

b.

stream line

c.

potential line

d.

streak line.

Discuss
Answer: (b).stream line
Q232.
To avoid the tendency of separation of liquid flow, the most suitable ratio of the diameters of the throat and the pipe, is

a.

1/4 to 1/8

b.

1/3 to 1/2

c.

1/2 to 3/4.

d.

none of these.

Discuss
Answer: (b).1/3 to 1/2
Q233.
The instrument used for measuring the velocity of flow, is known as

a.

venturimeter

b.

orifice meter

c.

pitot tube

d.

none of these.

Discuss
Answer: (c).pitot tube
Q234.
For a long pipe, the head loss

a.

at the entrance is ignored

b.

at the outlet is ignored

c.

at the entrance and outlet both are ignored

d.

due to friction is ignored.

Discuss
Answer: (c).at the entrance and outlet both are ignored
Q235.
On a flow net diagram, the distance between two consecutive steam lines at two successive sections are 1 cm and 0.5 cm respectively. If the velocity at the first section is 1 m/sec, the velocity at the second is

a.

1.0 m/sec

b.

0.5 m/sec

c.

2.0 m/sec

d.

2.5 m/sec

Discuss
Answer: (c).2.0 m/sec
Q236.
The flow is called rotational if its velocity normal to the plane of area is equal to

a.

angular velocity vector

b.

twice the angular velocity vector

c.

thrice the angular velocity vector

d.

none of these.

Discuss
Answer: (b).twice the angular velocity vector
Q237.
In flowing liquids pitot tubes are used measure

a.

discharge

b.

pressure

c.

velocity

d.

depth.

Discuss
Answer: (c).velocity
Q238.
Capillary rise of water is

a.

directly proportional to surface tension

b.

inversely proportional to water density

c.

inversely proportional to diameter of the tube

d.

All of these.

Discuss
Answer: (d).All of these.
Q239.
A water tank partially filled with water is being carried on a truck moving with a constant horizontal acceleration. The level of the water

a.

rises on the front side of the tank

b.

falls on the back side of the tank

c.

remains the same at both sides of the tank

d.

rises on the back side and falls on the front side

Discuss
Answer: (d).rises on the back side and falls on the front side
Q240.
An error of 1% in measuring the head of water over the crest of a rectangular weir, produces an error in the discharge which is equal to

a.

1.25%

b.

1.5%

c.

1.75%

d.

2.25%

Discuss
Answer: (b).1.5%
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