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 ?
Correct answer: A. 40° and 140°
- A. 40° and 140°
- B. 45° and 60°
- C. 90° and 80°
- D. 20° and 120°
Explanation
In a double-acting reciprocating pump, the air vessel supplies or receives flow during much of the cycle, but its flow becomes zero at the approximate transition crank angles of 40° and 140°. These angles mark the change between charging and discharging action of the vessel.
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