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 24 of 31

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Q231.
The behaviour of super-heated vapour is similar to that of

a.

perfect gas

b.

air

c.

steam

d.

ordinary gas

Discuss
Answer: (a).perfect gas
Q232.
Which of the following represents Otto cycle on temperature - entropy (T - s) diagram?

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q233.
Workdone during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and ฮณ = Ratio of specific heats)

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q234.

The heat absorbed during a polytropic process is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q235.
Briquetted coal is produced from the finely ground coal by moulding under pressure with or without a binding material.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (a).True
Q236.
Which of the following is a reversible non-flow process?

a.

Isochoric process

b.

Isobaric process

c.

Hyperbolic process

d.

all of these

Discuss
Answer: (d).all of these
Q237.
If in the equation pvn = C, the value of n = โˆ , then the process is called

a.

constant volume process

b.

adiabatic process

c.

constant pressure process

d.

isothermal process

Discuss
Answer: (a).constant volume process
Q238.
For the same maximum pressure and temperature,

a.

Otto cycle is more efficient than Diesel cycle

b.

Diesel cycle is more efficient than Otto cycle

c.

Dual cycle is more efficient than Otto and Diesel cycles

d.

Dual cycle is less efficient than Otto and Diesel cycles

Discuss
Answer: (b).Diesel cycle is more efficient than Otto cycle
Q239.
In a steady flow process, the ratio of

a.

heat transfer is constant

b.

work transfer is constant

c.

mass flow at inlet and outlet is same

d.

all of these

Discuss
Answer: (d).all of these
Q240.
The entropy of the universe is continually on the increase.

a.

Correct

b.

Incorrect

c.

Can't say

d.

None of these

Discuss
Answer: (a).Correct
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