Head developed by a centrifugal pump depends on___________________?

A. impeller diameter
B. speed
C. fluid density
D. type of casing

In a centrifugal pump casing, the flow of water leaving the_______________?

A. radial
B. radial
C. centrifugal
D. rectilinear

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

The efficiency of a centrifugal pump is maximum when its blades are__________________?

A. Straight
B. Bent forward
C. Bent backward
D. Bent forward first and then backward

When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be__________________?

A. Horizontal
B. Nearly horizontal
C. Steep
D. First rise and then fall

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. Same quantity of liquid
B. 0.75 q
C. Q/0.75
D. 1.5 q

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°

In centrifugal pumps, maximum efficiency is obtained when the blades are_________________?

A. Straight
B. Bent forward
C. Bent backward
D. Radial

In a centrifugal pump, the liquid enters the pump__________________?

A. At the top
B. At the bottom
C. At the center
D. From sides

Low specific speed of a pump implies it is____________________?

A. Centrifugal pump
B. Mixed flow pump
C. Axial flow pump
D. Any one of the above