The suction pressure should be high
The delivery pressure should be high
The suction pressure should be low
The delivery pressure should be low
A. The suction pressure should be high
N√P / H3/2
N√P / H²
N√P / H5/4
N√P / H3
At the top
At the bottom
At the canter
From sides
2V/(vr - v)
2V/(vr + v)
V/(vr - v)
V/(vr + v)
In an impulse turbine, the water impinges on the buckets with pressure energy.
In a reaction turbine, the water glides over the moving vanes with kinetic energy.
In an impulse turbine, the pressure of the flowing water remains unchanged and is equal to atmospheric pressure.
In a reaction turbine, the pressure of the flowing water increases after gliding over the vanes.
waVr /g × (Vr + v)
waVr /g × (Vr - v)
waVr /g × (Vr + v)²
waVr /g × (Vr - v)²
To break the jet of water
To bring the runner to rest in a short time
To change the direction of runner
None of these
Speed and power developed
Discharge and power developed
Speed and head of water
Speed, power developed and head of water
One-fourth
One-half
Three-fourth
Double
Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump
Low velocity
High velocity
Low pressure
High pressure
Centrifugal
Axial flow
Reciprocating
Mixed flow
Ratio of diameters
Square of ratio of diameters
Inverse ratio of diameters
Square of inverse ratio of diameters
Directly as fan speed
Square of fan speed
Cube of fan speed
Square root of fan speed
Increases with increase in pressure
Decreases with increase in pressure
More or less remains constant with increase in pressure
Unpredictable
Designing new impeller
Trimming the impeller size to the required size by machining
Not possible
Some other alterations in the impeller
39.2 %
49.2 %
68.8 %
84.8 %
Impeller diameter
Speed
Fluid density
Both (A) and (B) above
Ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
Ratio of the actual work available at the turbine to the energy imparted to the wheel
Ratio of the Work done on the wheel to the energy of the jet
None of the above
Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
Have identical forces
Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump
Friction loss
Cavitations
Static head
Loss of kinetic energy
Power absorbing machines
Power developing machines
Energy transfer machines
Energy generating machines
Same
0.75 B.H.P.
B.H.P./0.75
1.5 B.H.P.
Directly proportional to H1/2
Inversely proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
Centrifugal pump
Mixed flow pump
Axial flow pump
Any one of the above
High initial and maintenance cost
Lower discharge
Lower speed of operation
Necessity of air vessel
(D/2d) + 5
(D/2d) + 10
(D/2d) + 15
(D/2d) + 20
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
Centrifugal pump
Mixed flow pump
Axial flow pump
Any one of the above
Rectilinear flow
Radial flow
Free vortex motion
Forced vortex