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Question

If the heat rejected from the system is zero, then which of the following statement will hold TRUE?

A.

When net-work is equal to the heat absorbed, work efficiency is 100 %

B.

Heat is exchanged from one heat reservoir only 

C.

It violates Kelvin-Planck’s statement 

D.

All options are correct 

Answer ( Option D)

All options are correct 

Solution

Also, since Kelvin-Planck’s rejection means heat is exchanged from one heat reservoir only.

Now, from Kelvin-Planck’s statement we know that 100% efficiency is not possible for any cycle, therefore it violates Kelvin-Planck’s statement.

Hence, the correct option is (D).

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