Erosion and pits formation on the impeller of a centrifugal pump may b – McqOptions

MCQOPTIONS

1.	Erosion and pits formation on the impeller of a centrifugal pump may be due to________________?
A.	Cavitation
B.	Low speed of impeller
C.	Its operation with delivery valve closed for considerable time after starting the pump
D.	Off centering of pump with motor
Answer» B. Low speed of impeller

Discussion

No Comment Found

Related MCQs

While starting a centrifugal pump, its delivery valve should be kept___________________?
While starting an axial flow pump, its delivery valve should be kept _______________?
With a constant diameter impeller of a centrifugal pump _____________________?
With decrease in particle size to be fluidised by a particular fluid, the operating range of fluidisation velocity___________________?
With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the____________________?
With increase in molecular weight of the gas, the head developed by a centrifugal compressor will________________?
With increase in pump speed, its NPSH requirement_________________?
With increase in temperature, the vapor pressure of liquids__________________?
With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost________________?
With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss_______________?