Explore topic-wise MCQs in Thermodynamics.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

Second law efficiency is defined as the ratio of actual thermal efficiency to the maximum possible thermal efficiency.

A. true
B. false
Answer» B. false
Discussion
2.

Two engines having same thermal efficiency but supplied with heat from source at different temperatures,

A. will convert same fraction of heat they receive into work
B. from second law, one will perform better than other
C. this can be considered as a deficiency of the first law
D. all of the mentioned
Answer» E.
Discussion
3.

For a total reversible process,

A. W reversible = useful work
B. irreversibility = 0
C. both of the mentioned
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
4.

The difference between the reversible work and the useful work for a process is called irreversibility.

A. true
B. false
Answer» B. false
Discussion
5.

If the final state of the system is the dead state, the ____ and the ____ become identical.

A. reversible work, exergy
B. irreversible work, exergy
C. reversible work, irreversible work
D. none of the mentioned
Answer» B. irreversible work, exergy
Discussion