What is a heat engine? Define efficiency of a heat engine.

1.	What is a heat engine? Define efficiency of a heat engine.
Answer» Heat engine is a device that performs the conversion of heat energy to mechanical work through cyclic process. The efficiency of a heat engine is defined as the ratio of work done by the heat engine to heat absorbed per cycle. If a heat engine absorbs Q₁ amount of energy from the source and dissipates Q₂ amount of energy to sink, the efficiency η, is given by, \(η = \frac{Q_1-Q_2}{Q_1} = 1 - \frac{Q_2}{Q_1}.\)

Answer»

Heat engine is a device that performs the conversion of heat energy to mechanical work through cyclic process. The efficiency of a heat engine is defined as the ratio of work done by the heat engine to heat absorbed per cycle. If a heat engine absorbs Q₁ amount of energy from the source and dissipates Q₂ amount of energy to sink, the efficiency η, is given by,

\(η = \frac{Q_1-Q_2}{Q_1} = 1 - \frac{Q_2}{Q_1}.\)

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What is a heat engine? Define efficiency of a heat engine.

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