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 26 of 29

Discover more Topics under Civil Engineering

Q251.
To measure very low pressure, we use

a.

barometers

b.

piezometers

c.

manometers

d.

differential manometers.

Discuss
Answer: (c).manometers
Q252.
If v1 and v2 are the velocities of flow before and after sudden enlargement in a pipe, the head loss given by Carnot and Borda equation, is

a.

(v2² - v1²)/2g

b.

(v1 - v2)²/2g

c.

(v2 - v1)²/2g

d.

(v1 + v2)²/2g

Discuss
Answer: (b).(v1 - v2)²/2g
Q253.
Equation of continuity of fluids is applicable only if

a.

flow is steady

b.

flow is compressive

c.

flow is one dimensional

d.

all the above.

Discuss
Answer: (d).all the above.
Q254.
The flow in open channel is said to be critical if the Froude number is :

a.

less than 1.0

b.

equal to 1.0

c.

greater than 1.0

d.

None of these.

Discuss
Answer: (b).equal to 1.0
Q255.
An orifice is an opening in a vessel with

a.

closed perimeter of regular shape through which water flows

b.

the water level of the liquid on the up stream side is below the top of the orifice

c.

partially full flow

d.

prolonged sides having length of 2 to 3 diameters of the opening in thick wall.

Discuss
Answer: (a).closed perimeter of regular shape through which water flows
Q256.
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
Q257.
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
Q258.
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
Q259.
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
Q260.
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
Page 26 of 29