Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
None of the above
D. None of the above
39.2 %
49.2 %
68.8 %
84.8 %
Directly as the air or gas density
Inversely as square root of density
Inversely as density
As square of density
Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
Have identical forces
waVr /g × (Vr + v)
waVr /g × (Vr - v)
waVr /g × (Vr + v)²
waVr /g × (Vr - v)²
Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
Workdone per kN of water Losses within the impeller
Energy per kN at outlet of impeller Energy per kN at inlet of impeller
All of the above
0.15 to 0.3
0.4 to 0.5
0.6 to 0.9
1 to 1.5
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
N√P / H3/2
N√P / H²
N√P / H5/4
N√P / H3
An axial flow
An inward flow
An outward flow
A mixed flow
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
Product
Difference
Sum
None of these
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
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
Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
None of the above
Propeller turbine
Francis turbine
Impulse turbine
None of the above
Medium head application from 24 to 180 m
Low head installation up to 30 m
High head installation above 180 m
All types of heads
waV / 2g
waV / g
waV² / 2g
waV² / g
Pelton wheel with one nozzle
Pelton wheel with two or more nozzles
Kaplan turbine
Francis turbine
Impeller diameter
Speed
Fluid density
Both (A) and (B) above
Delivers unit discharge under unit head
Delivers unit discharge under unit speed
Develops unit power under unit head
Develops unit power under unit speed
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
P/ √H
P/ H
P/ H3/2
P/ H²
Smoothen the flow
Reduce suction head
Increase delivery head
Reduce acceleration head
0 to 4.5
10 to 100
80 to 200
250 to 300
Normal speed
Unit speed
Specific speed
None of these
2 to 4
4 to 8
8 to 16
16 to 24
39.2 %
48.8 %
84.8 %
88.4 %
Centrifugal pump
Reciprocating pump
Jet pump
Air lift pump
Pelton wheel
Kaplan turbine
Francis turbine
None of these
1/√2
1/2
1
√2