At what value of crank angle (roughly), no flow of water from or into – McqOptions

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1.	At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump?
A.	40° and 140°
B.	45° and 60°
C.	90° and 80°
D.	20° and 120°
Answer» B. 45° and 60°

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