The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe, and l = Length of pipe)

The diameter of the nozzle (d) for maximum transmission of power is gi

1.	The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe, and l = Length of pipe)
A.	= (D⁵/8fl)1/2
B.	= (D⁵/8fl)1/3
C.	= (D⁵/8fl)1/4
D.	= (D⁵/8fl)1/5
Answer» D. = (D⁵/8fl)1/5