Thermodynamics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Thermodynamics, 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 Thermodynamics 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 Thermodynamics mcq questions that explore various aspects of Thermodynamics problems. Each MCQ is crafted to challenge your understanding of Thermodynamics 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 Thermodynamics 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 Thermodynamics. 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 Thermodynamics knowledge to the test? Let's get started with our carefully curated MCQs!

Thermodynamics MCQs | Page 25 of 31

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Q241.
Which of the following statement is correct according to Clausis statement of second law off thermodynamics?

a.

It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.

b.

It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

c.

It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.

d.

none of the above

Discuss
Answer: (b).It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.
Q242.
Diesel cycle consists of __________ processes.

a.

two constant volume and two isentropic

b.

two constant pressure and two isentropic

c.

two constant volume and two isothermal

d.

one constant pressure, one constant volume and two isentropic

Discuss
Answer: (d).one constant pressure, one constant volume and two isentropic
Q243.
When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel is called

a.

wood charcoal

b.

bituminous coal

c.

briquetted coal

d.

none of these

Discuss
Answer: (d).none of these
Q244.
The process is adiabatic, if the value of n in the equation pvn = C, is

a.

0

b.

1

c.

γ

d.

∝

Discuss
Answer: (c).γ
Q245.
Which of the following is the extensive property of a thermodynamic system?

a.

Pressure

b.

Volume

c.

Temperature

d.

Density

Discuss
Answer: (b).Volume
Q246.
It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

a.

Correct

b.

Incorrect

c.

Can't say

d.

None of these

Discuss
Answer: (a).Correct
Q247.
One kilowatt is equal to

a.

1 N-m/s

b.

100 N-m

c.

1000 N-m/s

d.

1 x 106 N-m/s

Discuss
Answer: (c).1000 N-m/s
Q248.
Second law of thermodynamics defines

a.

heat

b.

work

c.

internal energy

d.

entropy

Discuss
Answer: (d).entropy
Q249.
Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as

a.

Zeroth law of thermodynamics

b.

First law of thermodynamics

c.

Second law of thermodynamics

d.

Kinetic theory of gases

Discuss
Answer: (b).First law of thermodynamics
Q250.
The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is

a.

0.086

b.

1.086

c.

3.086

d.

4.086

Discuss
Answer: (b).1.086
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