Axial flow pump is started with its delivery valve________________?
Axial flow pump is started with its delivery valve________________? A. kept fully closedB. kept fully open C. irrespective of any position D. kept 50% open E. none of the above
Axial flow pump is started with its delivery valve________________? A. kept fully closedB. kept fully open C. irrespective of any position D. kept 50% open E. none of the above
One horsepower is equal to_________________? A. 102 watts B. 75 watts C. 550 wattsD. 736 watts E. 33000 watts
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by_______________? A. designing new impellerB. trimming the impeller size to the required size by machining C. not possible…
Multistage centrifugal pumps are used to obtain___________________? A. high dischargeB. high head C. pumg of viscous fluids D. high head and high discharge E. high efficiency
When a pig system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be _________________? A. horizontal B. nearly horizontalC. steep D. first rise and then fall E. none of the above
Centrifugal pump is started with its delivery valve __________________? A. kept fully closed B. kept fully open C. irrespective of any position D. kept 50% open E. none of the above
For starting an axial flow pump, its delivery valve should be____________________? A. closedB. open C. depends on starting condition and flow desired D. could be either open or closed E. partly open and partly closed