Test Academy | A heat engine extracts heat (Q H ) from a thermal reservoir at a temperature of 1000 K and rejects heat (Q L ) to a thermal reservoir at a temperature of 100 K, while producing work (W). Which one of the combinations of [Q H , Q L and W] given is allowed? QH = 2000 J, QL = 500 J, W = 1000 J, QH = 2000 J, QL = 750 J, W = 1250 J, QH = 6000 J, QL = 500 J, W = 5500 J, QH = 6000 J, QL = 600 J, W = 5500 J

Question

A heat engine extracts heat (Q_H) from a thermal reservoir at a temperature of 1000 K and rejects heat (Q_L ) to a thermal reservoir at a temperature of 100 K, while producing work (W). Which one of the combinations of [Q_H , Q_L and W] given is allowed?

Options :

Q_H = 2000 J, Q_L = 500 J, W = 1000 J
Q_H = 2000 J, Q_L = 750 J, W = 1250 J
Q_H = 6000 J, Q_L = 500 J, W = 5500 J
Q_H = 6000 J, Q_L = 600 J, W = 5500 J

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