Question

The condition for power transmission by flow through a pipeline to be maximum is that the loss of head of the flow due to friction throughout the piepline length is: 

(a) One-third of the total head at inlet end 

(b) One-fourth of the total head at inlet end 

(c) Three-fourth of the total head at inlet end 

(d) One-half of the total head at inlet end

Answer 1

(a) One-third of the total head at inlet end 

Power transmitted through a pipe,

For maximum power, \(\frac{dP}{dV}\) = 0

h_f = \(\frac H3\)