Friction factor for a hydraulically smooth pipe at N = 2100 is f. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of N, will

increase or decrease depending on the pipe material.

Friction factor for a hydraulically smooth pipe at N = 2100 is f. If t

1.	Friction factor for a hydraulically smooth pipe at N = 2100 is f. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of N, will
A.	increase.
B.	decrease.
C.	remain unchanged.
D.	increase or decrease depending on the pipe material.
Answer» B. decrease.

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Friction factor for a hydraulically smooth pipe at N = 2100 is f. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of N, will

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