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A cycle heat engine does 50 kJ of work per cycle. If the efficiency of the heat engine is 75%. The heat rejected per cycle is
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16 2 kJ 3
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33 1 kJ 3
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37 1 kJ 2
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66 1 kJ 2
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Correct Option: A
η = 0.75
| ∴ ηHE = | = 0.75 | |
| Q1 |
or, Net heat input,
| Q1 = | = | |||
| 0.75 | 3 |
Also , W = Q1 - Q2
| or 50 = | - Q2 | |
| 3 |
| ∴ Net heat required Q2 = | = 16.66 kJ | |
| 3 |
