Recent questions tagged second-law&carnot-cycle&entropy

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Statement (I): First law of thermodynamics analyses the problem quantitatively whereas

asked Jan 16, 2018 in TD by chandu (215k points)

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Statement (I): Clausius inequality is valid for all cycles, reversible or irreversible including cycles.

asked Jan 16, 2018 in TD by chandu (215k points)

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Which of the following statements pertaining to entropy are correct?

asked Jan 16, 2018 in TD by chandu (215k points)

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A system of 100 kg mass undergoes a process in which its specific entropy increases from

asked Jan 16, 2018 in TD by chandu (215k points)

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Which of the following statements are correct for a throttling process?

asked Jan 16, 2018 in TD by chandu (215k points)

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Assertion (A): Entropy across the normal shock increases.

asked Jan 16, 2018 in TD by chandu (215k points)

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Assertion (A): $\oint \frac{\delta Q}{T} = 0$, the cycle is reversible

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Assertion (A): In an isolated system, the heat transfer $\partial$Q and

asked Jan 16, 2018 in TD by chandu (215k points)

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Which of the following relationships represents the change of entropy of a perfect gas?

asked Jan 16, 2018 in TD by chandu (215k points)

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If In 2 = 0.693, entropy generation of the universe would be

asked Jan 16, 2018 in TD by chandu (215k points)

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What wii be the required power in kW, if a cooling rate of 1.5 kW is desired?

asked Jan 16, 2018 in TD by chandu (215k points)

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If the machine is operated as a heat pump between the same temperature limits

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The COP of the refrigerator will be

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The final temperature $T_{1}$ reahced by the bodies on delivery of

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Which of the above reasons are correct?

asked Jan 16, 2018 in TD by chandu (215k points)

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An inventor claims to have developed a refrigeration unit which maintains

asked Jan 16, 2018 in TD by chandu (215k points)

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The available energy added to the system, if the

asked Jan 16, 2018 in TD by chandu (215k points)

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The entropy change during heat addition is

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To improve the performance we have to

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What will his engine be?

asked Jan 16, 2018 in TD by chandu (215k points)

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