The average heat transfer co-efficient over the entire length of the plate (ha)

Question

The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as

Options:

A . Ha = 0.8hL

B . Ha = 2hL

C . Ha = hL

D . Ha= 5hL

Answer: Option B

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