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(a) Figure 14 shows a lift pump. Explain why, when the piston is:
(i) Pulled upwards, valve A opens while valve B closes.
(ii) Pushed downwards, valve A closes while valve B opens.
(b) After several strokes, water rises above the piston as shown in Figure 15.
State how water is removed from the cylinder through the spout.
(c) A lift pump can lift water to a maximum height of 10m. Determine the maximum height to which the pump can
raise paraffin. (take density of paraffin as 800kgm-3 and density of water as 1000kgm-3)
(d) State one factor that determines the height to which a force pump can lift water.