Thermodynamics Question 302

Question: In a Carnot engine, the temperature of reservoir is 927C and that of sink is27C . If the work done by the engine when it transfers heat from reservoir to sink is 12.6×106J, the quantity of heat absorbed by the engine from the reservoir is

Options:

A) 16.8×106J

B) 4×106J

C) 7.6×106J

D) 4.2×106J

Show Answer

Answer:

Correct Answer: A

Solution:

[a] As we know η=WQ1=1T2T1

η=1300K1200K=34

34=WQ1Q1=W×43Q1=12.6×106×43

Q1=16.8×106J.



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