BdPho regional Mymensingh Higher Secondary 2019/6

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samiul_samin
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BdPho regional Mymensingh Higher Secondary 2019/6

Unread post by samiul_samin » Sun Feb 17, 2019 9:05 pm

Gautum must have made a calculation mistake somewhere .In his calculation of the efficiency of the heat engine,he created,he has derived the expression $e=(T_H+T_C)/(T_H+2T_C)$.$T_H$ is temparature of heat source and $T_C$ is temparature of cold sink.
State the law of thermodynamics that this expression violates,and explain why.

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samiul_samin
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Re: BdPho regional Mymensingh Higher Secondary 2019/6

Unread post by samiul_samin » Sun Feb 17, 2019 9:58 pm

He violated the second law of thermodynamics .

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Re: BdPho regional Mymensingh Higher Secondary 2019/6

Unread post by samiul_samin » Mon Feb 25, 2019 4:51 pm

Because when $T_H=T_C$ we get efficiency $66$% which is impossible.

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