A. closed
B. open
C. depends on starting condition and flow desired
D. could be either open or closed
E. partly open and partly closed
0
Centrifugal pump is started with its delivery valve __________________?
0
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be _________________?
A. kept fully closed
B. kept fully open
C. irrespective of any position
D. kept 50% open
E. none of the above
0
Multistage centrifugal pumps are used to obtain___________________?
A. horizontal
B. nearly horizontal
C. steep
D. first rise and then fall
E. none of the above
0
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by_______________?
A. high discharge
B. high head
C. pumping of viscous fluids
D. high head and high discharge
E. high efficiency
0
One horsepower is equal to_________________?
A. designing new impeller
B. trimming the impeller size to the required size by machining
C. not possible
D. some other alterations in the impeller
E. none of the above
0
Axial flow pump is started with its delivery valve________________?
A. 102 watts
B. 75 watts
C. 550 watts
D. 736 watts
E. 33000 watts
0
Head developed by a centrifugal pump depends on___________________?
A. kept fully closed
B. kept fully open
C. irrespective of any position
D. kept 50% open
E. none of the above
0
In a centrifugal pump casing, the flow of water leaving the_______________?
A. impeller diameter
B. speed
C. fluid density
D. type of casing
E. A. and B. above