0.26
0.36
0.46
0.56
C. 0.46
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
0.50 to 0.65
0.65 to 0.75
0.75 to 0.85
0.85 to 0.90
0.25 m3/s
0.5 m3/s
1.5 m3/s
2.5 m3/s
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
Centrifugal pump
Mixed flow pump
Axial flow pump
None of the above
Lift and resultant force
Drag and resultant force
Lift and tangential force
Lift and drag
Causes noise and vibration of various parts
Reduces the discharge of a turbine
Causes sudden drop in power output and efficiency
All of the above
The suction pressure should be high
The delivery pressure should be high
The suction pressure should be low
The delivery pressure should be low
Geometric similarity
Kinematic similarity
Dynamic similarity
None of these
Closed
Open
Depends on starting condition and flow desired
Could be either open or closed
Increases with increase in pressure
Decreases with increase in pressure
More or less remains constant with increase in pressure
Unpredictable
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.
To transport water downstream without eddies
To convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section
For safety of turbine
To increase flow rate
Horizontal
Nearly horizontal
Steep
First rise and then fall
Directly as the air or gas density
Inversely as square root of density
Inversely as density
As square of density
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
They have slow speeds
They are suitable even for low water heads
They give constant efficiency, even if the discharge is not constant
All of the above
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
Centrifugal pump
Reciprocating pump
Air lift pump
Screw pump
Centrifugal pump
Reciprocating pump
Jet pump
Air lift pump
39.2 %
49.2 %
68.8 %
84.8 %
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
Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
Have identical forces
39.2 %
48.8 %
84.8 %
88.4 %
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
Impeller diameter
Speed
Fluid density
Both (A) and (B) above
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
Straight
Bent forward
Bent backward
Radial
0.15 to 0.3
0.4 to 0.5
0.6 to 0.9
1 to 1.5