Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

Theoretical power required (in watts) to drive a reciprocating pump is

1.	Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)
A.	QHs
B.	QHd
C.	Q (Hs - Hd)
D.	Q (Hs + Hd)
Answer» E.