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.
But there are no rules about what is a ship, and what is a boat. Steamboat, riverboat, UBoat, tugboat, all too big to fit the definition of can be carried on a ship. If someone has a boat that is particularly seaworthy, and looks traditional, we may say sheâs a real little ship, even if the boat is 30 feet long.