MAE 241 Final Exam MCQ’s (Exam 3)fully solved
2025-2026 updated to pass
1. B. For any
1. which one of the statements below is false?
inter- nally
A. entropv is a thermodynamic property at a given state.
reversible
B. For any internally reversible steady flow system, the reversible
steady flow
work only de- pends on pressure and specific volume even if there is
sys- tem, the
significant change in kinetic or potential energy.
re- versible
C. The isentropic eflciency expresses quantitatively how eflciently an
work only
actual device approximates an idealized one.
depends on
pressure and
specific
volume even
if there
is significant
change in
kinetic or
potential ener-
gy.
2. B. 900 kJ 2. For a refrigerator cycle operating between two thermal reservoirs.
Wnet,cycle= 900 kJ, QH = 1800 kJ. The
heat input or cooling load QL is equal to:
A. 0 kJ
B. 900 kJ
C. 1800 kJ
D. 2700 k
E. Cannol be determined with the given information
3. D. 15 3. The coeflcient of performance for a heat pump operating in a
reversed Carnot cycle between two thermal energy reservoirs at 2°C and
22°C, is most nearly equal to:
A. 1.1
1/
7
, MAE 241 Final Exam MCQ’s (Exam 3)fully solved
2025-2026 updated to pass
B. 6
C. 12
D. 15
E. Cannot be determined with the given information.
2/
7
2025-2026 updated to pass
1. B. For any
1. which one of the statements below is false?
inter- nally
A. entropv is a thermodynamic property at a given state.
reversible
B. For any internally reversible steady flow system, the reversible
steady flow
work only de- pends on pressure and specific volume even if there is
sys- tem, the
significant change in kinetic or potential energy.
re- versible
C. The isentropic eflciency expresses quantitatively how eflciently an
work only
actual device approximates an idealized one.
depends on
pressure and
specific
volume even
if there
is significant
change in
kinetic or
potential ener-
gy.
2. B. 900 kJ 2. For a refrigerator cycle operating between two thermal reservoirs.
Wnet,cycle= 900 kJ, QH = 1800 kJ. The
heat input or cooling load QL is equal to:
A. 0 kJ
B. 900 kJ
C. 1800 kJ
D. 2700 k
E. Cannol be determined with the given information
3. D. 15 3. The coeflcient of performance for a heat pump operating in a
reversed Carnot cycle between two thermal energy reservoirs at 2°C and
22°C, is most nearly equal to:
A. 1.1
1/
7
, MAE 241 Final Exam MCQ’s (Exam 3)fully solved
2025-2026 updated to pass
B. 6
C. 12
D. 15
E. Cannot be determined with the given information.
2/
7
