Three Carnot engines operate between temperature reservoirs as follows: Engine A: Th = 1 100 K,Tc = 1 000 K;Engine B: Th = 550 K,Tc = 500 K;Engine C: Th = 1100 K,Tc = 500 K.Which two engines have the same thermal efficiency?
A) A and C
B) B and C
C) A and B
D) No two have the same thermal efficiency.
E) A and B and C
Correct Answer:
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