The overall efficiency of a centrifugal pump is simply the ratio of the water (output). power to the shaft (input) power and is illustrated by the equation below. Î· = P W / P S where Î· is efficiency, P w is the water power, and P s is the shaft power.
While talking about difference between a ship and a boat, the first thing that comes to oneâs mind is their sizes. Traditionally people consider a ship as a large ocean going vessel, whereas boats are comparatively quite smaller in size.
boat-a small vessel for travel on water. dredger-a barge (or a vessel resembling a barge) that is used for dredging. houseboat-a barge that is designed and equipped for use as a dwelling. pontoon - (nautical) a floating structure (as a flat-bottomed boat) that serves as a dock or to support a bridge.