Thermodynamics Question 284

Question: A Carnot engine takes 3×106cal. of heat from a reservoir at 627C, and gives it to a sink at 27C. The work done by the engine is

Options:

A) 4.2×106J

B) 8.4×106J

C) 16.8×106J

D) zero

Show Answer

Answer:

Correct Answer: B

Solution:

[b] η=(627)+(273)(273+27)627+273

=900300900=600900=23

work=(η)×Heat =23×3×106×4.2J

=8.4×106J



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