A heat engine absorbs of energy as heat from a reservoir and rejects energy to a sink

PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics

Problem

A heat engine absorbs 600 J600\,\text{J} of energy as heat from a 800 K800\,\text{K} reservoir and rejects energy to a 300 K300\,\text{K} sink. Each cycle generates 0.15 J ⁣/ ⁣K0.15\,\text{J}\!/\!\text{K} of entropy internally. Assuming no other energy interactions, what is the actual work produced per cycle? (a) 315 J315\,\text{J} (b) 330 J330\,\text{J} (c) 285 J285\,\text{J} (d) 375 J375\,\text{J}

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