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A reversible engine converts one-sixth o...

A reversible engine converts one-sixth of heat input into work. When the temperature of sink is reduced by `62^(@)C,` its efficiency is doubled. Find the temperature of the source and the sink,

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`eta _(1) = 1//6, T _(2) //T _(1) = 5//6 , eta _(2) = 1//3 = 1 - (T_(2) - 62) //T_(1) , ` solving `T _(1) = 372 K, T _(2) = 310 K`
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