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 10 of 29

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Q91.
If jet of water coming out from a nozzle with a velocity 9.81 m/s, the angle of elevation being 30°, the time to reach the highest point is

a.

0.25 s

b.

0.50 s

c.

1.0 s

d.

1.5 s.

Discuss
Answer: (b).0.50 s
Q92.
The discharge through a 100 mm diameter external mouth piece fitted to the side of a large vessel is 0.05948 m³/s. The head over the mouth piece is

a.

2 m

b.

2.5 m

c.

3.0 m

d.

4.0 m.

Discuss
Answer: (d).4.0 m.
Q93.
If cohesion between the molecules of a fluid is more than adhesion between the fluid and glass, the free level of fluid in a dipped glass tube will be

a.

higher than the surface of liquid

b.

same as the surface of liquid

c.

lower than the surface of liquid

d.

none of these.

Discuss
Answer: (c).lower than the surface of liquid
Q94.
The continuity equation

a.

expresses the relationship between work and energy

b.

relates the momentum per unit volume between two points on a stream line

c.

relates mass rate of flow along a stream line

d.

requires that Newton's second law of motion be satisfied at every point in fluid.

Discuss
Answer: (c).relates mass rate of flow along a stream line
Q95.
Water displaced by a floating wooden block of density 0.75, 5 m long, 2 m wide and 3 m high, is

a.

17.5 m³

b.

20.0 m³

c.

22.5 m³

d.

25 km³.

Discuss
Answer: (c).22.5 m³
Q96.
In pipe lines, a surge tank is provided

a.

to relieve the pressure due to water hammer

b.

to provide additional water head

c.

to overflow the pipe line when suddenly closed

d.

to remove the frictional loss in pipe.

Discuss
Answer: (a).to relieve the pressure due to water hammer
Q97.
Total head of a liquid particle in motion is the sum of

a.

potential head and kinetic head

b.

kinetic head and pressure head

c.

potential head and pressure head

d.

potential head, kinetic head and pressure head.

Discuss
Answer: (d).potential head, kinetic head and pressure head.
Q98.
The velocity distribution of viscous fluid through a circular/pipe is :

a.

hyperbolic

b.

circular

c.

parabolic

d.

elliptical.

Discuss
Answer: (c).parabolic
Q99.
Mercury is generally used in barometers because

a.

its vaour pressure is practically zero

b.

the height of the barometer will be less

c.

it is a best liquid

d.

both (a) and (b) above

Discuss
Answer: (d).both (a) and (b) above
Q100.
Atmospheric pressure varies with

a.

altitude

b.

temperature

c.

weather conditions

d.

all of the above.

Discuss
Answer: (d).all of the above.
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