A single pass air heater is connected to a two pass unit. For the air – McqOptions

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1.	A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of
A.	2
B.	20.8
C.	20.2
D.	20.5
Answer» C. 20.2

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