If (L) is the total head at inlet and (1) is the head loss due to friction, efficiency of power transmission through a straight pipe is given by

If (L) is the total head at inlet and (1) is the head loss due to fric

1.	If (L) is the total head at inlet and (1) is the head loss due to friction, efficiency of power transmission through a straight pipe is given by
A.	\(\frac{{L - 1}}{L}\)
B.	\(\frac{{L - 1}}{{L + 1}}\)
C.	\(\frac{L}{{L + 1}}\)
D.	\(\frac{L}{{L - 1}}\)
Answer» B. \(\frac{{L - 1}}{{L + 1}}\)

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If (L) is the total head at inlet and (1) is the head loss due to friction, efficiency of power transmission through a straight pipe is given by

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