A single$-$suction, single$-$stage, centrifugal pump delivers $240$ lps of sea water $($SG$=1\mathrm{.}01)$ from a source where the water level varies $2$ meters from high tide to low tide level.The pump centerline is located $3\mathrm{.}0$ meters above the surface of the water at high tide level.The pump discharges into a surface condenser, $3\mathrm{.}5$ meters above the pump centerline. Lossof head due to friction in the suction line is $0\mathrm{.}8$ meter and that in the discharge line is $3$meters. Pump is directly coupled to a $1450$ rpm$,440$ volts, $3-$phase, $60$ Hz motor. Determinea$)$ the total dynamic head; b$)$ the specific speed and the type of pump used; and c$)$ the pumpbrake power if the efficiency is $78\%.(25$ points$)$