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.
Ships are considered to be larger than boats. In fact, the conventional saying is that ships can carry boats, but boats cannot carry ships. According to the Navy, boats are watercraft less than 65 feet long. What defines a ship, however, varies according to local laws and regulations.