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 28 of 31

Q271.
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is
Discuss
Answer: (d).+60 kJ
Q272.
The atomic mass of an element is the number of times the atom of that element is heavier than the hydrogen atom.
Discuss
Answer: (a).True
Q273.
A cycle consisting of two isothermal and two isentropic processes, is known as
Discuss
Answer: (a).Carnot cycle
Q274.
When a perfect gas is expanded through an aperture of minute dimensions, the process is known as
Discuss
Answer: (d).throttling process
Discuss
Answer: (d).non-coking bituminous coal
Q276.
In a reversible adiabatic process, the ratio of T1/T2 is equal to
Discuss
Answer: (b).(p1/p2)γ - 1/ γ
Q277.
The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)
Discuss
Answer: (b).1.5 Ru x T
Q278.
The atomic mass of nitrogen is __________ oxygen.
Discuss
Answer: (b).less than
Q279.
The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)
Discuss
Answer: (c).1 - (1/ rγ - 1)
Q280.
In an ideal gas turbine plant, it is assumed that the compression and expansion processes are
Discuss
Answer: (b).isentropic