Question

if the energy input to a carnot engine is thrice the work it performs then the fraction of energy rejected to the sink is​

Answer 1

A). 13

B). 14

C). 25

D). 23

E). 34

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Answer 2

If the energy input to a carnot engine is thrice the work it performs then the fraction of energy rejected to the sink is​ two times the work performed by the engine.

* Carnot Engine is a reversible engine.

* Let the work done by the engine is considered as W.

* So, as per the given condition, heat input to the engine is 3* W.

* As, carnot engine is reversible, the heat at the exit will be (Heat input - work done).

* So, heat at the exit is 3W - W = 2W.

* This proves that heat at the exit will be two times the work done.