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The temperature of source and sink of a heat engine are 127°C and 27°C respectively. An inventor claims its efficiency to be 26%, then :
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- it is impossible
- it is possible with high probability
- it is possible with low probability
- data are insufficient.
Correct Option: A
| η = 1 - | = | = | ||||
| 400 | 400 | 4 |
| η = | × 100 = 25% | |
| 4 |
Hence, it is not possible to have efficiency more than 25%.
