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Question

An inventor says, he has invented an engine which will reject 20% of heat absorbed from the source and the engine operates between 2000 K and 500 K. What kind of engine it is?

एक आविष्कारक का कहना है, उसने एक ऐसे इंजन का आविष्कार किया है जो स्रोत से अवशोषित गर्मी का 20% अस्वीकार कर देगा और इंजन 2000 K और 500 K के बीच संचालित होता है। यह किस प्रकार का इंजन है?

A.

Carnot engine

B.

Diesel engine

C.

Dual engine

D.

Impossible engine

Answer ( Option D)

Impossible engine

Solution

Using Clauses inequality:

Therefore, it does not satisfies Claudius inequality.

..Method 2..


Thus, no engine working under same temperature condition has higher efficiency than the Carnot engine. Therefore, the engine is impossible.

Hence, the correct option is (D).

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