The equivalent diameter for flow through a rectangular duct of width – McqOptions

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1.	The equivalent diameter for flow through a rectangular duct of width B and height H is
A.	HB/2(H + B)
B.	HB/(H + B)
C.	2HB/(H + B)
D.	4HB/(H + B)
Answer» D. 4HB/(H + B)

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