Explore topic-wise MCQs in Thermodynamics.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

Heat rate is given by (in kJ/kWh)

A. cycle efficiency
B. 3600 / cycle efficiency
C. cycle efficiency / 3600
D. cycle efficiency * 3600
Answer» C. cycle efficiency / 3600
Discussion
2.

Steam rate is the rate of steam flow required to produce unit shaft output.

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

The work ratio is defined as the ratio of

A. positive work output to net work output
B. net work output to positive work output
C. heat input to work output
D. none of the mentioned
Answer» C. heat input to work output
Discussion
4.

The liquid water handled by pump is

A. incompressible
B. with increase in pressure, there is a little change in density or specific volume
C. both of the mentioned
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
5.

THE_WORK_RATIO_IS_DEFINED_AS_THE_RATIO_OF?$

A. positive work output to net work output
B. net work output to positive work output
C. heat input to work output
D. none of the mentioned
Answer» C. heat input to work output
Discussion
6.

Heat rate is given by (in kJ/kWh)$

A. cycle efficiency
B. 3600 / cycle efficiency
C. cycle efficiency / 3600
D. cycle efficiency * 3600
Answer» C. cycle efficiency / 3600
Discussion
7.

Steam rate is the rate of steam flow required to produce unit shaft output.$

A. true
B. false
Answer» B. false
Discussion
8.

Work output of turbine is ____ the work input to the pump.

A. much larger
B. much smaller
C. equal to
D. none of the mentioned
Answer» B. much smaller
Discussion
9.

The liquid water handled by pump i?

A. incompressible
B. with increase in pressure, there is a little change in density or specific volume
C. both of the mentioned
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
10.

For a Rankine cycle, which of the following is true?

A. a reversible constant pressure heating process happens in steam boiler
B. reversible adiabatic expansion of steam in turbine
C. reversible constant pressure heat rejection in condenser
D. all of the mentioned
Answer» E.
Discussion
11.

In a Rankine cycle, all the processes are ideal.

A. true
B. false
Answer» B. false
Discussion
12.

For a vapour power cycle,

A. net heat input is converted into net work output
B. Q1-Q2 = Wt-Wp
C. efficiency = 1 – (Q2/Q1)
D. all of the mentioned
Answer» E.
Discussion
13.

For a fluid undergoing cycle process,

A. there is no net change in its internal energy
B. energy transfer as heat is equal to the energy transfer as work
C. both of the mentioned
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
14.

The path followed in a vapour power cycle is

A. boiler-condenser-turbine-pump
B. boiler-turbine-condenser-pump
C. boiler-turbine-pump-condenser
D. boiler-pump-turbine-condenser
Answer» C. boiler-turbine-pump-condenser
Discussion
15.

In the vapour power cycle, working fluid undergoes a change of phase.

A. true
B. false
Answer» B. false
Discussion
16.

A power cycle continuously converts ____ into ____

A. heat, heat
B. work, heat
C. heat, work
D. work, work
Answer» D. work, work
Discussion