2V/(vr - v)
2V/(vr + v)
V/(vr - v)
V/(vr + v)
B. 2V/(vr + v)
1/√2
1/2
1
√2
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
Diameter
Square of diameter
Cube of diameter
Fourth power of diameter
Geometric similarity
Kinematic similarity
Dynamic similarity
None of these
Straight
Bent forward
Bent backward
Radial
Propeller turbine
Francis turbine
Impulse turbine
Any one of the above
Inlet of draft rube
Blade inlet
Guide blade
Penstock
[2(Vr - v) v]/ Vr²
2(Vr + v) v]/ Vr²
[(Vr - v) v]/ Vr
[(Vr + v) v]/ Vr
Equal to
1.2 times
1.8 times
Double
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
Directly as fan speed
Square of fan speed
Cube of fan speed
Square root of fan speed
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
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
Discharge a diameter
Head a speed²
Head a diameter
Power a speed⁴
The centrifugal pump is suitable for large discharge and smaller heads.
The centrifugal pump requires less floor area and simple foundation as compared to reciprocating pump.
The efficiency of centrifugal pump is less as compared to reciprocating pump.
All of the above
Slow speed with radial flow at outlet
Medium speed with radial flow at outlet
High speed with radial flow at outlet
High speed with mixed flow at outlet
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
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
Give high discharge
Produce high heads
Pump viscous fluids
All of these
Two jets
Two runners
Four jets
Four runners
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
Directly as fan speed
Square of fan speed
Cube of fan speed
Square root of fan speed
Manometric efficiency
Mechanical efficiency
Overall efficiency
Volumetric efficiency
Air lift pump
Jet pump
Hydraulic coupling
Hydraulic press
Slow speed pump with radial flow at outlet
Medium speed pump with radial flow at outlet
High speed pump with radial flow at outlet
High speed pump with axial flow at outlet
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
40 %
50 %
60 %
80 %
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
Same
0.75 B.H.P.
B.H.P./0.75
1.5 B.H.P.
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