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A scientist says that the efficiency of ...

A scientist says that the efficiency of his heat engine which operates at source temperature `127^(@)C` and sink temperature `27^(@)C is 26%`, then

A

It is impossible

B

It is possible but less probable

C

It is quite probable

D

Data are incomplete

Text Solution

Verified by Experts

The correct Answer is:
A
Carnot engine is an ideal engine so its efficiency will be maximum
`therefore eta_"max"=(400-300)/400xx100%=25%`
therefore 26% efficient engine is impossible
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