A positive displacement pump can be understood as a pressure pump which causes the flow of liquid in a pipe or a casing due to some pressure being applied to the water particles to move towards a certain direction.
To make a better understanding of it, compare a positive displacement pump with a ve
Forward end of shaft is connected to main engine and at aft end we have propeller fitted on it. Basically it is a cantilever beam with one end fixed and other end free on which propeller is fitted and weight of propeller will try to pull the shaft down. A sealing is provided at a