Three Carnot engines A, B and C having source temperature of 750?K, 70 – McqOptions

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1.	Three Carnot engines A, B and C having source temperature of 750?K, 700?K and 650?K have sink temperatures respectively 400?k, 350?k and 300?k. Which engine is the least efficient?
A.	All being Carnot engine have identical efficiencies
B.	Pulsejet
C.	Engine B
D.	Engine C
E.	Engine A
Answer» F.

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