Explore topic-wise MCQs in Thermodynamics.

This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

A TER which transfers heat to system is called ____ and one which receives heat is called ____

A. source, sink
B. sink, source
C. sink, sink
D. source, source
Answer» B. sink, source
Discussion
2.

Processes inside a thermal energy reservoir are quasi-static.

A. true
B. false
Answer» B. false
Discussion
3.

A thermal energy reservoir is a large body of

A. small heat capacity
B. large heat capacity
C. infinite heat capacity
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
4.

Efficiency of a heat engine is defined as

A. total heat output / net work input
B. total heat input / net work output
C. net work output / total heat input
D. net work input / total heat output
Answer» D. net work input / total heat output
Discussion
5.

According to Joule’s experiments,

A. heat can be completely converted into work
B. work can be completely converted into heat
C. both heat and work are completely interchangeable
D. all of the mentioned
Answer» C. both heat and work are completely interchangeable
Discussion
6.

The first law of thermodynamics doesn’t tell us whether a thermodynamic process is feasible or not.

A. true
B. false
Answer» B. false
Discussion
7.

A_THERMAL_ENERGY_RESERVOIR_IS_A_LARGE_BODY_OF?$

A. small heat capacity
B. large heat capacity
C. infinite heat capacity
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
8.

A TER which transfers heat to system is called ____ and one which receives heat is called ____$

A. source, sink
B. sink, source
C. sink, sink
D. source, source
Answer» B. sink, source
Discussion
9.

Processes inside a thermal energy reservoir are quasi-static.$

A. true
B. false
Answer» B. false
Discussion
10.

Which if the following statements are true for a mechanical energy reservoir(MER)?

A. it is a large body enclosed by an adiabatic impermeable wall
B. stores work as KE or PE
C. all processes within an MER are quasi-static
D. all of the mentioned
Answer» E.
Discussion
11.

Efficiency of a heat engine is defined a?

A. total heat output / net work input
B. total heat input / net work output
C. net work output / total heat input
D. net work input / total heat output
Answer» D. net work input / total heat output
Discussion
12.

The function of a heat engine cycle is to _____ continuously at the expense of _____ to the system.

A. heat input, produce work
B. produce work, heat input
C. can be both of the mentioned
D. none of the mentioned
Answer» C. can be both of the mentioned
Discussion
13.

In a heat engine cycle, which of the following process occurs?

A. heat is transferred from furnace to boiler
B. work is produced in turbine rotor
C. steam is condensed in condenser
D. all of the mentioned
Answer» E.
Discussion
14.

Boiler, turbine, condenser and pump together constitute a heat engine.

A. true
B. false
Answer» B. false
Discussion
15.

In a cyclic heat engine there is

A. net heat transfer to the system and net work transfer from the system
B. net heat transfer from the system and net work transfer to the system
C. depends on the conditions of cycle
D. none of the mentioned
Answer» B. net heat transfer from the system and net work transfer to the system
Discussion
16.

According to Joule’s experiments,$

A. heat can be completely converted into work
B. work can be completely converted into heat
C. both heat and work are completely interchangeable
D. all of the mentioned
Answer» C. both heat and work are completely interchangeable
Discussion
17.

The first law of thermodynamics doesn’t tell us whether a thermodynamic process is feasible or not.

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