Hydraulic Machines MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Hydraulic Machines, a fundamental topic in the field of Mechanical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Hydraulic Machines 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 Hydraulic Machines mcq questions that explore various aspects of Hydraulic Machines problems. Each MCQ is crafted to challenge your understanding of Hydraulic Machines principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Mechanical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Hydraulic Machines MCQs are your pathway to success in mastering this essential Mechanical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Hydraulic Machines. 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 Hydraulic Machines knowledge to the test? Let's get started with our carefully curated MCQs!

Hydraulic Machines MCQs | Page 13 of 17

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Q121.
The unit speed of the turbine runner is

a.

N/√H

b.

N/H

c.

N/H^3/2

d.

N/H²

Discuss
Answer: (a).N/√H
Q122.
In a centrifugal pump, the regulating valve is provided on the

a.

casing

b.

delivery pipe

c.

suction pipe

d.

impeller

Discuss
Answer: (b).delivery pipe
Q123.
A Francis turbine is an outward flow reaction turbine.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (b).False
Q124.
The specific speed (Ns) of a centrifugal pump is given by

a.

(N√Q)/H^2/3

b.

(N√Q)/H^3/4

c.

(N√Q)/H

d.

(N√Q)/H5/4

Discuss
Answer: (b).(N√Q)/H^3/4
Q125.
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?

a.

Hydraulic ram

b.

Hydraulic intensifier

c.

Hydraulic torque converter

d.

Hydraulic accumulator

Discuss
Answer: (c).Hydraulic torque converter
Q126.
The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is

a.

[wa (V - v)]/2g

b.

[wa (V - v)]/g

c.

[wa (V - v)²]/2g

d.

[wa (V - v²)]/g

Discuss
Answer: (d).[wa (V - v²)]/g
Q127.
In a reaction turbine, the water enters the wheel under pressure and flows over the vanes.

a.

Correct

b.

Incorrect

c.

Can't say

d.

None of these

Discuss
Answer: (a).Correct
Q128.
If the ratio of all the corresponding linear dimensions are equal, then the model and the prototype are said to have

a.

geometric similarity

b.

kinematic similarity

c.

dynamic similarity

d.

none of these

Discuss
Answer: (a).geometric similarity
Q129.
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

a.

(W/p) × (A/a)

b.

(p/W) × (a/A)

c.

(W/p) × (a/A)

d.

(p/W) × (A/a)

Discuss
Answer: (c).(W/p) × (a/A)
Q130.
Braking jet in an impulse turbine is used

a.

to break the jet of water

b.

to bring the runner to rest in a short time

c.

to change the direction of runner

d.

none of these

Discuss
Answer: (b).to bring the runner to rest in a short time
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