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Heat Engines

A Carnot engi...

Question

A Carnot engine works between a source and a sink maintained at constant temperatures $T_{1}$ and $T_{2}$ . For efficiency to be greatest

A

T_{1}

and

T_{2}

should be high

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B

T_{1}

and

T_{2}

should be low

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C

T_{1}

should be low and

T_{2}

should be high

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D

T_{1}

should be high and

T_{2}

should be low

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Solution

The correct option is D $T_{1}$ should be high and $T_{2}$ should be low
$η = 1 - \frac{T_{2}}{T_{1}}$ So for $η$ to be high $T_{1}$ must be high and $T_{2}$ must be low.

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