No flow will take place
Cavitation will be formed
Efficiency will be low
Excessive power will be consumed
B. Cavitation will be formed
Directly proportional to H1/2
Inversely proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
0.26
0.36
0.46
0.56
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
Power produced by the turbine to the energy actually supplied by the turbine
Actual work available at the turbine to the energy imparted to the wheel
Workdone on the wheel to the energy (or head of water) actually supplied to the turbine
None of the above
Diameter of jet to the diameter of Pelton wheel
Velocity of jet to the velocity of Pelton wheel
Diameter of Pelton wheel to the diameter of jet
Velocity of Pelton wheel to the velocity of jet
0.15 to 0.3
0.4 to 0.5
0.6 to 0.9
1 to 1.5
Centrifugal
Axial flow
Reciprocating
Mixed flow
0.25 m3/s
0.5 m3/s
1.5 m3/s
2.5 m3/s
Directly proportional to H1/2
Inversely proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
waVr /g × (Vr + v)
waVr /g × (Vr - v)
waVr /g × (Vr + v)²
waVr /g × (Vr - v)²
One-fourth
One-half
Three-fourth
Double
Manometric efficiency
Mechanical efficiency
Overall efficiency
Volumetric efficiency
Strain
Pressure
Kinetic
None of these
The water flows parallel to the axis of the wheel
The water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
The water enters the wheel at the outer periphery and then flows towards the centre of the wheel
The flow of water is partly radial and partly axial
waV / 2g
waV / g
waV² / 2g
waV² / g
At the top
At the bottom
At the canter
From sides
Energy available at the impeller to the energy supplied to the pump by the prime mover
Actual workdone by the pump to the energy supplied to the pump by the prime mover
Energy supplied to the pump to the energy available at the impeller
Manometric head to the energy supplied by the impeller per kN of water
Propeller turbine
Francis turbine
Impulse turbine
None of the above
Air lift pump
Jet pump
Hydraulic coupling
Hydraulic press
Delivers unit discharge under unit head
Delivers unit discharge under unit speed
Develops unit power under unit head
Develops unit power under unit speed
Low head of water
High head of water
Medium head of water
High discharge
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.
[2(Vr - v) v]/ Vr²
2(Vr + v) v]/ Vr²
[(Vr - v) v]/ Vr
[(Vr + v) v]/ Vr
4
6
8
12
(N√Q)/H2/3
(N√Q)/H3/4
(N√Q)/H
(N√Q)/H5/4
Velocity of flow at inlet to the theoretical jet velocity
Theoretical velocity of jet to the velocity of flow at inlet
Velocity of runner at inlet to the velocity of flow at inlet
None of the above
Pelton wheel with one nozzle
Pelton wheel with two or more nozzles
Kaplan turbine
Francis turbine
High initial and maintenance cost
Lower discharge
Lower speed of operation
Necessity of air vessel
39.2 %
48.8 %
84.8 %
88.4 %
Rotational flow
Radial
Forced spiral vortex flow
Spiral vortex flow