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Question
A thermodynamic cycle is comprised of four processes 1→2 , 2→3 , 3→4 and 4→1 . Heat & work interactions of these processes are given as
Process Heat transfer (J) Work done (J) 1-2 0 150 (by the gas) 2-3 100 (from the gas) 0 3-4 0 50 (on the gas) 4-1 200 (to the gas) 0
The thermal efficiency of the cycle is -
A thermodynamic cycle is comprised of four processes 1→2 , 2→3 , 3→4 and 4→1 . Heat & work interactions of these processes are given as
| Process | Heat transfer (J) | Work done (J) |
| 1-2 | 0 | 150 (by the gas) |
| 2-3 | 100 (from the gas) | 0 |
| 3-4 | 0 | 50 (on the gas) |
| 4-1 | 200 (to the gas) | 0 |
The thermal efficiency of the cycle is -
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Solution
The correct option is D 50 %
From the given data, we can find the efficiency of the cyclic process by using
η=Work outputHeat input=1−(Heat rejectedHeat added)
From the data given in the question,
η=1−100200= 50 %
Thus, option (d) is the correct answer.
From the given data, we can find the efficiency of the cyclic process by using
η=Work outputHeat input=1−(Heat rejectedHeat added)
From the data given in the question,
η=1−100200= 50 %
Thus, option (d) is the correct answer.
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