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 5 of 31

Q41.
In the first law of thermodynamics, the total energy of the system remains constant.
Discuss
Answer: (a).True
Q42.
The efficiency of Diesel cycle increases with
Discuss
Answer: (a).decrease in cut-off
Q43.
Coal gas is obtained by mixing coal and gas at ambient conditions.
Discuss
Answer: (b).No
Q44.
The value of specific heat at constant pressure (cp) is __________ that of at constant volume (cv).
Discuss
Answer: (c).more than
Q45.
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.
Discuss
Answer: (b).carbonisation
Discuss
Answer: (a).Absolute pressure = Gauge pressure + Atmospheric pressure
Q47.
The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and recondensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
Discuss
Answer: (c).fractional distillation
Discuss
Answer: (c).The solid fuels have higher calorific value than liquid fuels.
Discuss
Answer: (b).All the heat engines are based on Carnot cycle.
Q50.
When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called
Discuss
Answer: (a).Zeroth law of thermodynamics
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