Q1: Power transmitted through a pipe is maximum when friction head loss, is

ANS:B - one-third of the total head supplied

Power transmitted through a pipe is maximum when the friction head loss is one-third of the total head supplied. The maximum power transmission occurs when the head supplied is utilized most effectively to overcome friction losses and drive the fluid through the pipe. In fluid mechanics, it's known that the maximum power is transmitted when the head supplied is three times the friction head loss. Therefore, the friction head loss should be one-third of the total head supplied for maximum power transmission efficiency. Thus, the correct option is: one-third of the total head supplied.