Decreases
Increases
Remain same
None of these
A. Decreases
[2(Vr - v) v]/ Vr²
2(Vr + v) v]/ Vr²
[(Vr - v) v]/ Vr
[(Vr + v) v]/ Vr
0 to 4.5
10 to 100
80 to 200
250 to 300
Directly as fan speed
Square of fan speed
Cube of fan speed
Square root of fan speed
Increases
Decreases
Remain unaffected
First increases and then decreases
Q/√H
Q/H
Q/H3/2
Q/H²
Slow speed with radial flow at outlet
Medium speed with radial flow at outlet
High speed with radial flow at outlet
High speed with axial flow at outlet
Waste valve closes suddenly
Supply pipe is long
Supply pipe is short
Ram chamber is large
Installing the turbine below the tail race level
Using stainless steel runner of the turbine
Providing highly polished blades to the runner
All of the above
Normal speed
Unit speed
Specific speed
None of these
10 r.p.m.
20 r.p.m.
40 r.p.m.
80 r.p.m.
Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump
Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump
Rotational flow
Radial
Forced spiral vortex flow
Spiral vortex flow
Directly proportional to H1/2
Inversely proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
Impeller diameter
Speed
Fluid density
Both (A) and (B) above
(1 + cos φ)/2
(1 - cos φ)/2
(1 + sin φ)/2
(1 - sin φ)/2
Hydraulic
Mechanical
Overall
None of these
Kinetic head
Velocity head
Manometric head
Static head
To run the turbine full
To prevent air to enter the turbine
To increase the head of water by an amount equal to the height of the runner outlet above the tail race
To transport water to downstream
Kept fully closed
Kept fully open
Irrespective of any position
Kept 50% open
Full load speed
The speed at which turbine runner will be damaged
The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
The speed corresponding to maximum overload permissible
Same
0.75 B.H.P.
B.H.P./0.75
1.5 B.H.P.
waV/2g × sinθ
waV/g × sinθ
waV²/2g × sin2θ
waV²/g × sinθ
2 to 4
4 to 8
8 to 16
16 to 24
Ratio of diameters
Square of ratio of diameters
Inverse ratio of diameters
Square of inverse ratio of diameters
Potential Energy
Strain Energy
Kinetic energy
None of these
The suction pressure should be high
The delivery pressure should be high
The suction pressure should be low
The delivery pressure should be low
Kept fully closed
Kept fully open
Irrespective of any position
Kept 50% open
Discharge a diameter
Head a speed²
Head a diameter
Power a speed⁴
10° to 15°
15° to 20°
20° to 25°
25° to 30°