If H is the total head at inlet and h is the head lost due to friction, the efficiency of power transmission through a straight pipe is given by:
1
\(\dfrac{H}{H~+~h}\)
2
\(\dfrac{H-h}{H}\)
3
\(\dfrac{H-h}{H+h}\)
4
\(\dfrac{H}{H-h}\)
5
None of the above