*/*_The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)?

*/*_The loss of head due to friction in a pipe of uniform diameter in

1.	/_The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)?
A.	1/RN
B.	4/RN
C.	16/RN
D.	64/RN
Answer» D. 64/RN