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
C. Difference of theoretical discharge and the actual discharge
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
L.A.N
2 L.A.N
(L.A.N)/60
(2 L.A.N)/60
40 %
50 %
60 %
80 %
Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump
Propeller turbine
Francis turbine
Impulse turbine
None of the above
Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump
Inlet of draft rube
Blade inlet
Guide blade
Penstock
Normal speed
Unit speed
Specific speed
None of these
ηh = ηo × ηm
ηm = ηm × ηh
ηo = ηh × ηm
None of these
Centrifugal pump
Reciprocating pump
Air lift pump
Screw pump
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
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
Friction loss
Cavitations
Static head
Loss of kinetic energy
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
At the top
At the bottom
At the canter
From sides
Equal to
1.2 times
1.8 times
Double
Low head of water
High head of water
Medium head of water
High discharge
P/ √H
P/ H
P/ H3/2
P/ H²
Pelton wheel with one nozzle
Pelton wheel with two or more nozzles
Kaplan turbine
Francis turbine
Kept fully closed
Kept fully open
Irrespective of any position
Kept 50% open
Kept fully closed
Kept fully open
Irrespective of any position
Kept 50% open
Directly proportional to H1/2
Inversely proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
Strain
Pressure
Kinetic
None of these
Designing new impeller
Trimming the impeller size to the required size by machining
Not possible
Some other alterations in the impeller
10-15°
20-25°
30-40°
50-60°
Tangential flow impulse turbine
Inward flow impulse turbine
Outward flow impulse turbine
Inward flow reaction turbine
Store the energy of water
Increase the pressure of water
To lift water from deep wells
To lift small quantity of water to a greater height when a large quantity of water is available at a smaller height
Allow the water to enter the runner without shock
Allow the water to flow over them, without forming eddies
Allow the required quantity of water to enter the turbine
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
2 to 4
4 to 8
8 to 16
16 to 24