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

By fitting an air vessel to the reciprocating pump, there is always a

1.	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
A.	9.2%
B.	8.8%
C.	4.8%
D.	8.4%
Answer» B. 8.8%