Question

A carnot heat engine working at temp 300k and 600k has a work output 800j/cycle.The amount of heat energy supplied from source to engine in each cycle is

Answer 1

We know,

Work output /heat supplied = efficiency ( η ) = 1 - T₋/T₂ , here T₂ > T₁

A/C to question,

T₁ = 300K , T₂ = 600K , work output = 1000J

Now, we have to find heat supplied to the engine = ?

∴ 1000J/heat supplied = 1 - 300/600 = 1 - 1/2 = 1/2

Heat supplied = 2 × 1000 J = 2000J

Hence, heat supplied to the engine is 2000J

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