A. discharge a diameter
B. head a speed2
C. head a diameter
D. Power a speed3
E. none of the above is wrong
Related Mcqs:
- 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 - In a centrifugal pump casing, the flow of water leaving the_______________?
A. radial
B. radial
C. centrifugal
D. rectilinear
E. vortex - Head developed by a centrifugal pump depends on___________________?
A. impeller diameter
B. speed
C. fluid density
D. type of casing
E. A. and B. above - Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of____________________?
A. high initial and maintenance cost
B. lower discharge
C. lower speed of operation
D. necessity of air vessel
E. all of the above - The optimum value of vane exit angle for a centrifugal pump impeller is_________________?
A. 10-15°
B. 20-25°
C. 30-40°
D. 50-60°
E. 80-90°. - In centrifugal pumps, maximum efficiency is obtained when the blades are_________________?
A. straight
B. bent forward
C. bent backward
D. radial
E. given aerofoil section - Motion of a liquid in a volute casing of a centrifugal pump is an example of____________________?
A. rotational flow
B. radial
C. forced spiral vortex flow
D. forced cylindrical vortex flow
E. spiral vortex flow - Casting of a centrifugal pump is designed so as to minimize________________?
A. friction loss
B. cavitation
C. static head
D. loss of kinetic energy
E. starting time - A turbine pump is basically a centrifugal pump equipped additionally with_________________?
A. adjustable blades
B. backward curved blades
C. vaned diffusion casing
D. inlet guide blades
E. totally submerged operation facility - In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?
A. rectilinear flow
B. radial flow
C. free vortex motion
D. forced vortex
E. none of the above
