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 17 of 29

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Q161.
For exerting a pressure of 4.8 kg/cm², the depth of oil (specific gravity 0.8), should be

a.

40 cm

b.

41 cm

c.

56 cm

d.

60 cm

Discuss
Answer: (d).60 cm
Q162.
A cylindrical vessel 40 cm high is revolved about its vertical axis so that the water touches the bottom when it just spills out. If the radius of the cylinder is √5 cm, the angular velocity of rotation, is

a.

2 rad/sec

b.

3 rad/sec

c.

4 rad/sec

d.

5 rad/sec

Discuss
Answer: (a).2 rad/sec
Q163.
For the flow of liquid from an open ended tube (or nozzle) leading to the formation of spray of liquid drops, the number generally applied, is

a.

Froude number

b.

Weber number

c.

Reynold number

d.

Mach number.

Discuss
Answer: (b).Weber number
Q164.
An error of 1% in measuring the head of water over the crest of a triangular notch, produces an error in the discharge which is equal to

a.

1.25%

b.

1.5%

c.

2.0%.

d.

2.5%

Discuss
Answer: (d).2.5%
Q165.
Discharge over an ogee weir remains the same as that of

a.

sharp crested weir

b.

triangular weir

c.

cippoletti weir

d.

drowned weir.

Discuss
Answer: (c).cippoletti weir
Q166.
When no air is left below the nappe and water stream adheres to the down stream face of the weir, it is known as

a.

free nappe

b.

depressed nappe

c.

clinging nappe

d.

none of these.

Discuss
Answer: (c).clinging nappe
Q167.
The best side slope for most economical trapezoidal section, is

a.

30°

b.

45°

c.

60°

d.

None of these.

Discuss
Answer: (c).60°
Q168.
The following is not a laminar flow

a.

Flow of oil in measuring instruments

b.

Flow in beds in ground water

c.

Rise of water in plants through roots

d.

Flow in water pipe lines.

Discuss
Answer: (d).Flow in water pipe lines.
Q169.
Which one of the following statements is true ?

a.

The value of kinetic energy correction factor for turbulent flow lies between 1.03 to 1.06

b.

The value of kinetic energy correction factor for laminar flow is 2

c.

The practical value of kinetic energy correction factor for turbulent flow is unity

d.

all the above.

Discuss
Answer: (d).all the above.
Q170.
Equation of continuity of flow is based on the principle of conservation of

a.

mass

b.

momentum

c.

force

d.

none of these.

Discuss
Answer: (a).mass
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