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?

𝑄 H = 2000 J, 𝑄 L = 750 J, 𝑊 = 1250 J

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

GATE 2023 Mechanical Engineering PYQ — Thermodynamics

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Thermodynamics · Second Law

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Recurring concept

Second Law has appeared in GATE Mechanical Engineering 47 times across 25 years (2016, 2017, 2022, 2023, 2024, ...).