A. straight
B. bent forward
C. bent backward
D. bent forward first and then backward
E. bent backward first and then forward
0
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be__________________?
0
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge_____________________?
A. horizontal
B. nearly horizontal
C. steep
D. first rise and then fall
E. none of the above
0
The optimum value of vane exit angle for a centrifugal pump impeller is_________________?
A. same quantity of liquid
B. 0.75 Q
C. Q/0.75
D. 1.5 Q
E. none of the above
0
In centrifugal pumps, maximum efficiency is obtained when the blades are_________________?
A. 10-15°
B. 20-25°
C. 30-40°
D. 50-60°
E. 80-90°.
0
In a centrifugal pump, the liquid enters the pump__________________?
A. straight
B. bent forward
C. bent backward
D. radial
E. given aerofoil section
0
Low specific speed of a pump implies it is____________________?
A. at the top
B. at the bottom
C. at the center
D. from sides
E. none of the above
0
For small discharge at high pressure, following pump is preferred_____________________?
A. centrifugal pump
B. mixed flow pump
C. axial flow pump
D. any one of the above
E. none of the above
0
The horse power required in above case will be___________________?
A. centrifugal
B. axial flow
C. mixed flow
D. propeller
E. reciprocating
0
Motion of a liquid in a volute casing of a centrifugal pump is an example of____________________?
A. same
B. 0.75 B.H.P.
C. B.H.P./0.75
D. 1.5 B.H.P.
E. none of the above
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