Double Acting Reciprocating Pump

The work requirement of reciprocating pump with increase in acceleration head
The positive pump has less pressure at output than centrifugal pump. (Say True or False)
Slip of a reciprocating pump is defined as the
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of
Reciprocating pump should be chosen in preference to centrifugal pump