13.
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is

14.
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is

17.
Manometric head, in case of a centrifugal pump, is equal to

19.
Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of

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