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.
A boat is a watercraft of modest size designed to float or plane, to provide passage across water. Usually this water is inland (lakes) or in protected coastal areas. In naval terms, a boat is something small enough to be carried aboard another vessel (a ship). A ship is a large vessel that floats on water.