(W/p) × (A/a)
(p/W) × (a/A)
(W/p) × (a/A)
(p/W) × (A/a)
C. (W/p) × (a/A)
[wa (V - v)]/2g
[wa (V - v)]/g
[wa (V - v)²]/2g
[wa (V - v²)]/g
The centrifugal pump is suitable for large discharge and smaller heads.
The centrifugal pump requires less floor area and simple foundation as compared to reciprocating pump.
The efficiency of centrifugal pump is less as compared to reciprocating pump.
All of the above
Two cylinders, two rams and a storage device
A cylinder and a ram
Two coaxial rams and two cylinders
A cylinder, a piston, storage tank and control valve
Directly proportional
Inversely proportional
4th power
None of these
Increases with increase in pressure
Decreases with increase in pressure
More or less remains constant with increase in pressure
Unpredictable
Net head
Absolute velocity
Blade velocity
Flow
10° to 15°
15° to 20°
20° to 25°
25° to 30°
24.8 r.p.m.
48.2 r.p.m
82.4 r.p.m.
248 r.p.m
Impeller diameter
Speed
Fluid density
Both (A) and (B) above
Same
0.75 B.H.P.
B.H.P./0.75
1.5 B.H.P.
0.26
0.36
0.46
0.56
[2(Vr - v) v]/ Vr²
2(Vr + v) v]/ Vr²
[(Vr - v) v]/ Vr
[(Vr + v) v]/ Vr
Rectilinear flow
Radial flow
Free vortex motion
Forced vortex
Directly proportional to H1/2
Inversely proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
The wheel runs entirely by the weight of water
The wheel runs entirely by the impulse of water
The wheel runs partly by the weight of water and partly by the impulse of water
None of the above
Directly proportional to H1/2
Inversely proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
Geometric similarity
Kinematic similarity
Dynamic similarity
None of these
Ratio of actual discharge to the theoretical discharge
Sum of actual discharge and the theoretical discharge
Difference of theoretical discharge and the actual discharge
Product of theoretical discharge and the actual discharge
Directly proportional to diameter of its impeller
Inversely proportional to diameter of its impeller
Directly proportional to (diameter)² of its impeller
Inversely proportional to (diameter)² of its impeller
Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump
Directly as the air or gas density
Inversely as square root of density
Inversely as density
As square of density
Of such a size that it delivers unit discharge at unit head
Of such a size that it delivers unit discharge at unit power
Of such a size that it requires unit power per unit head
Of such a size that it produces unit horse power with unit head
At the level of tail race
Little above the tail race
Slightly below the tail race
About 2.5 m above the tail race to avoid cavitations.
Directly as the air or gas density
Inversely as square root of density
Inversely as density
As square of density
Volute casing
Volute casing with guide blades
Vortex casing
Any one of these
Slow speed with radial flow at outlet
Medium speed with radial flow at outlet
High speed with radial flow at outlet
High speed with mixed flow at outlet
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
Greater than 15°
Greater than 8°
Greater than 5°
Less than 8°
2 to 4
4 to 8
8 to 16
16 to 24
At full load
At which there will be no damage to the runner
Corresponding to maximum overload permissible
At which the turbine will run freely without load