1. A single acting pump takes water from well at 4 m from pump level. The bore and stroke are 20 cm and 30 cm. The suction pipe of 10 cm diameter is 8 m long. If the pump runs at 30 rpm check whether separation will occur.

2. A single acting reciprocating pump running at 20 rpm has a bore and stroke of 40 cm each. The suction and delivery heads are 4 and 20 m. The suction and delivery pipes of 20 cm diameter are 4 m and 20 m long. f = 0.02. Determine the power required if the efficiency is 80%.