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Mechanical Engineering - Thermodynamics - Discussion

Discussion Forum : Thermodynamics - Section 5 (Q.No. 21)
Thermodynamics
21.
Which of the following statement is correct?
The increase in entropy is obtained from a given quantity of heat at a low temperature.
The change in entropy may be regarded as a measure of the rate of the availability or unavailability of heat for transformation into work.
The entropy represents the maximum amount of work obtainable per degree drop in temperature.
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
5 comments Page 1 of 1.
Soumya said:   9 years ago
The answer is wrong. Entropy represents unavailable energy, not available energy.
Rahul said:   8 years ago
How Answer is c?

Entropy indicates the amount of energy which cannot be converted to use full work.
Krishna said:   8 years ago
How can be option C correct?
Arjun said:   7 years ago
A is the right answer.
Prasad Cln said:   5 years ago
Option A will be right if "the increase in the entropy is more when obtained from a heat transfer at a low temperature compared to heat transfer at a higher temperature.

But for this question, option B seems more relevant than the other 2 options.
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