250+ TOP MCQs on Fundamentals of Thermodynamics and Answers

Steam and Gas Turbines Multiple Choice Questions on “Fundamentals of Thermodynamics”.

1. Steam turbines work on __________
a) Otto cycle
b) Dual cycle
c) Rankine cycle
d) None of the mentioned

Answer: c
Clarification: Otto cycle petrol is used as fuel, Rankine cycle is the process followed in steam turbines.

2. Gas turbines work on ___________
a) Rankine cycle
b) Diesel cycle
c) Brayton cycle
d) None of the mentioned

Answer: c
Clarification: Rankine cycle is used in steam turbines. Brayton cycle is followed in gas turbines.

3. Generally, water is used as working fluid in rankine cycle.
a) True
b) False

Answer: a
Clarification: Rankine cycle is followed in steam turbines. In steam turbines generally, water is used as working fluids.

4. Ideal Brayton cycle consists of ________
a) Isoentropic process and Isobaric process
b) Adiabatic process and Isobaric process
c) Adiabatic process
d) None of the mentioned

Answer: a
Clarification: Ideal brayton cycle works on isoentropic process and isobaric process.

5. Actual Brayton cycle works on _________
a) Isoentropic process and Isobaric process
b) Adiabatic process and Isobaric process
c) Isoentropic process
d) None of the mentioned

Answer: b
Clarification: Actual brayton cycle works on Adiabatic process and Isobaric process slight deviations from actual brayton cycle.

6. Brayton cycle is also known as __________
a) Joule cycle
b) Regenerative cycle
c) Carnot cycle
d) None of the mentioned.

Answer: a
Clarification: Regenerative cycle is a closed loop usage of working fluid in rankine cycle. Brayton cycle is also called a joule cycle.

7. Brayton cycle is also called an Ericsson cycle.
a) True
b) False

Answer: a
Clarification: Brayton cycle is also called an ericsson cycle.

8. Brayton cycles are further divided into ______ types.
a) 2
b) 3
c) 4
d) None of the mentioned

Answer: a
Clarification: Brayton cycle is further divided into two types. They are open cycle and closed cycle.

9. Internal combustion chamber is used in _______ Brayton cycle.
a) open
b) closed
c) depends
d) none

Answer: a
Clarification: Internal combustion chambers are present in open cycles to heat the working fluid.

10. Heat exchanger is used in a closed Brayton cycle.
a) True
b) False

Answer: a
Clarification: Heat exchangers are used in closed cycles to raise the temperature of working fluid.