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In one cycle, a heat engine rejects 80% ...

In one cycle, a heat engine rejects 80% of the energy absorbed from the hot reservoir to the cold reservoir . Calculate the efficiency of the engine.

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The efficienecy of a heat engine ` eta W/Q_(h) = (Q_(h) -Q_(c))/(Q_(h)) = 1 - Q_(c)/Q_(h) `
` eta = 1- 0.8 = 0.2 i.e` 20 %
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