Q. Whenever heat is transferred through a finite temperature difference, there is always a decrease in the availability of energy so transferred.
✅ Correct Answer: (A)
true
Engineering Thermodynamics MCQs | Page - 49
Dear candidates you will find MCQ questions of Engineering Thermodynamics here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. Any thermodynamic process is accompanied by entropy generation.
✅ Correct Answer: (A)
true
Q. The rate of entropy increase of the control volume or the net rate of entropy transfer to it.
✅ Correct Answer: (B)
exceeds, is equal to
Q. The rate at which entropy is transferred out must the rate at which entropy enters the control volume.
✅ Correct Answer: (C)
exceed
Q. The first law efficiency is defined as the ratio of the output energy to the input energy.
✅ Correct Answer: (A)
true
Q. With the concept of exergy available, which of the following is possible?
✅ Correct Answer: (C)
both of the mentioned
Q. If work is involved, Amin= and if heat is involved, Amin=
✅ Correct Answer: (B)
w, q(1-to/t)
Q. If solar energy Qr is available at a reservoir storage temperature of Tr and if quantity of heat Qa is transferred by the solar collector at temperature Ta, then which of the following is true?
✅ Correct Answer: (D)
all of the mentioned
Q. For proper utilization of exergy, it is desirable to make first law efficiency and the source and use temperatures should
✅ Correct Answer: (B)
as close to unity, match
Q. The slopes of sublimation and vaporization curves for all substances are
✅ Correct Answer: (B)
positive
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