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 23 of 29

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Q221.
For uniform flow in canals

a.

there is a balance between the frictional loss and drop in elevation of the channel

b.

bed and free water surfaces of a channel are parallel to each other

c.

bed of channel represents the hydraulic gradient

d.

all the above.

Discuss
Answer: (d).all the above.
Q222.
If H is height of the liquid above the sill, the effect of end contractions, according to Francis formula, is

a.

0.1 H

b.

0.2 H

c.

0.3 H

d.

0.4 H

Discuss
Answer: (a).0.1 H
Q223.
Pick up the correct statement from the following :

a.

For maximum velocity of flow, the depth of water in the circular channel must be 0.81 times the diameter of the channel

b.

For maximum velocity, the hydraulic mean depth must be 0.3 times the diameter of circular channel

c.

For maximum discharge the depth of flow must be 0.95 times the diameter of circular channel

d.

All the above.

Discuss
Answer: (d).All the above.
Q224.
The pressure less than atmospheric , pressure, is known

a.

suction pressure

b.

vacuum pressure

c.

negative gauge pressure

d.

all the above.

Discuss
Answer: (d).all the above.
Q225.
A rise or fall of liquid in a glass tube of a very small diameter when dipped is

a.

directly proportional to the force per unit length of periphery

b.

direcly proportional to the sine of the angle of contact

c.

directly proportional to the specific weight of liquid

d.

inversely proportional to the diameter of the glass tube.

Discuss
Answer: (c).directly proportional to the specific weight of liquid
Q226.
To measure very low pressure, we use

a.

barometers

b.

piezometers

c.

manometers

d.

differential manometers.

Discuss
Answer: (c).manometers
Q227.
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
Q228.
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.
Q229.
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
Q230.
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
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