For a reciprocating water pump having cylinder diameter d and crank radius r, if W is the weight of water lifted, the coefficient of discharge is

\(\frac{{2W}}{{\gamma \pi {d^2}r}}\)

\(\frac{W}{{\gamma \pi {d^2}}}\)

For a reciprocating water pump having cylinder diameter d and crank ra

1.	For a reciprocating water pump having cylinder diameter d and crank radius r, if W is the weight of water lifted, the coefficient of discharge is
A.	\(\frac{W}{{\pi {d^2}r}}\)
B.	\(\frac{{2W}}{{\gamma \pi {d^2}r}}\)
C.	\(\frac{W}{{\gamma {d^2}r}}\)
D.	\(\frac{W}{{\gamma \pi {d^2}}}\)
Answer» C. \(\frac{W}{{\gamma {d^2}r}}\)