Consider two pipes of same length and diameter through which water is – McqOptions

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1.	Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f 1 and that for smooth pipe is f 2 . Pick out the correct statement.
A.	f 1 = f 2
B.	f 1 < f 2
C.	f 1 > f 2
D.	data not sufficient to relate f 1 & f 2
Answer» D. data not sufficient to relate f 1 & f 2

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