A. Smoothens the flow by avoiding pulsations
B. Increases the volumetric efficiency of the pump
C. Saves the pump from the danger of cavitation
D. None of these
Related Mcqs:
- Function of air vessel provided in a reciprocating pump is to_________________?
A. Reduce discharge fluctuation
B. Reduce the danger of cavitation
C. Avoid the necessity of priming
D. Increase the pump efficiency - Air vessel provided in a reciprocating pump is for__________________?
A. Increasing the acceleration head
B. Making the friction in pipe uniform
C. Decreasing the acceleration head
D. None of these - Air vessel of a reciprocating pump is initially filled with___________________?
A. Atmospheric air
B. Compressed air
C. Water
D. None of these - Air vessel fitted to a reciprocating pump____________________?
A. Increases the work done
B. Decreases the work done
C. Causes cavitation
D. Results in non-uniform discharge - 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° - With increasing flow rate, the hydraulic efficiency of a centrifugal pump__________________?
A. Monotonically decreases
B. Decreases and then increases
C. Remains constant
D. Increases and then decreases - What is the maximum theoretical suction lift (metres) of a reciprocating pump ?
A. 5
B. 10
C. 50
D. 100 - The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge) ?
A. Q1/Q2
B. Q2/Q1
C. (Q2 – Q1)/Q1
D. (Q2 – Q1)/Q2 - Acceleration head in a reciprocating pump_______________________?
A. Increases the work done during delivery stroke
B. Decreases the work done during suction stroke
C. Does not change the work requirement of the pump
D. Increases the work done during suction stroke - Reciprocating pumps compared to centrifugal pumps__________________?
A. Deliver liquid at uniform pressure
B. Can handle slurries more efficiently
C. Are not subject to air binding
D. Can be operated with delivery valve closed
