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 12 of 31

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Q111.
According to kinetic theory of gases, the kinetic energy of translation of a molecule is proportional to

a.

T

b.

T

c.

1/T

d.

1/T

Discuss
Answer: (b).T
Q112.
The amount of heat given out by the complete combustion of 1 kg of fuel is known as calorific value of solid or liquid fuel.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (a).True
Q113.
The conditions of temperature and pressure at 0°C (273K) and 760 mm of Hg pressure are termed as __________ temperature and pressure.

a.

normal

b.

standard

c.

Can't say

d.

None of these

Discuss
Answer: (b).standard
Q114.
The value of cp/cv for air is

a.

1

b.

1.4

c.

1.8

d.

23

Discuss
Answer: (b).1.4
Q115.
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

a.

δQ = T.ds

b.

δQ = T/ds

c.

dQ = ds/T

d.

none of these

Discuss
Answer: (a).δQ = T.ds
Q116.
For the same compression ratio, the efficiency of dual combustion cycle is

a.

greater than Diesel cycle and less than Otto cycle

b.

less than Diesel cycle and greater than Otto cycle

c.

greater than Diesel cycle

d.

less than Diesel cycle

Discuss
Answer: (a).greater than Diesel cycle and less than Otto cycle
Q117.
In an irreversible process, there is a

a.

loss of heat

b.

no loss of heat

c.

gain of heat

d.

no gain of heat

Discuss
Answer: (a).loss of heat
Q118.
The amount of heat required to raise the temperature of unit mass of a gas through one degree at constant pressure is called specific heat at constant pressure.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (a).True
Q119.
The change of entropy, when heat is removed from the gas, is negative.

a.

Yes

b.

No

c.

Can't say

d.

None of these

Discuss
Answer: (a).Yes
Q120.
Coke is produced

a.

when coal is first dried and then crushed to a fine powder by pulverising machine

b.

from the finely ground coal by moulding under pressure with or without a binding material

c.

when coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel

d.

by heating wood with a limited supply of air to a temperature not less than 280°C

Discuss
Answer: (c).when coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel
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