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

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Which one of the following statements is correct if the surroundings are at 27°C ?

asked Jan 15, 2018 in TD by chandu (215k points)

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Assertion (A): An adiabatic process is always a constant entropy process.

asked Jan 15, 2018 in TD by chandu (215k points)

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For a real thermodynamic cycle, which one of the following correct?

asked Jan 15, 2018 in TD by chandu (215k points)

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The entropy of a mixture of ideal gases is the sum of the

asked Jan 15, 2018 in TD by chandu (215k points)

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What is the entropy change during heat addition?

asked Jan 15, 2018 in TD by chandu (215k points)

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The value of $T_{2}$ if work outputs of both the engines are equal is

asked Jan 15, 2018 in TD by chandu (215k points)

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Which of the following is/are reversible process (es)?

asked Jan 15, 2018 in TD by chandu (215k points)

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What is the value of temperature $T_{2}$?

asked Jan 15, 2018 in TD by chandu (215k points)

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In which of the above processes, the change in entropy will be positive?

asked Jan 15, 2018 in TD by chandu (215k points)

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What will be the least rate of heat rejection per kW net output of the engine?

asked Jan 15, 2018 in TD by chandu (215k points)

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The efficiency of the engine is

asked Jan 15, 2018 in TD by chandu (215k points)

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Which of the above statements is/are correct?

asked Jan 15, 2018 in TD by chandu (215k points)

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Assertion (A): Efficiency of a reversible engine operating between

asked Jan 15, 2018 in TD by chandu (215k points)

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If the efficiencies of the engines are same then the relationship between

asked Jan 15, 2018 in TD by chandu (215k points)

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Which one of the following is the correct representation of

asked Jan 15, 2018 in TD by chandu (215k points)

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The thermal efficiency of the engine is approximately equal to

asked Jan 15, 2018 in TD by chandu (215k points)

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The entropy change of the system as its temperature changes form T1 to T2 is equal to

asked Jan 15, 2018 in TD by chandu (215k points)

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In which one of the following situations the entropy change will be negative:

asked Jan 15, 2018 in TD by chandu (215k points)

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Which of these statements is/are correct?

asked Jan 15, 2018 in TD by chandu (215k points)

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Which of these statements are correct?

asked Jan 15, 2018 in TD by chandu (215k points)

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