Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
C. Directly proportional to N²
2 to 4
4 to 8
8 to 16
16 to 24
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
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
39.2 %
49.2 %
68.8 %
84.8 %
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
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
1/√2
1/2
1
√2
Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
Have identical forces
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
Low head
High head
High head and low discharge
Low head and high discharge
Hydraulic ram
Hydraulic intensifier
Hydraulic torque converter
Hydraulic accumulator
Increases
Decreases
Remain unaffected
First increases and then decreases
175.4 r.p.m.
215.5 r.p.m.
241.5 r.p.m.
275.4 r.p.m
Rotational flow
Radial
Forced spiral vortex flow
Spiral vortex flow
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
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
Smoothen flow
Reduce acceleration to minimum
Increase pump efficiency
Save pump from cavitations
Net head
Absolute velocity
Blade velocity
Flow
Impeller diameter
Speed
Fluid density
Both (A) and (B) above
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
Centrifugal pump
Mixed flow pump
Axial flow pump
Any one 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
Centrifugal pump
Mixed flow pump
Axial flow pump
None of the above
Speed and power developed
Discharge and power developed
Speed and head of water
Speed, power developed and head of water
Delivers unit discharge under unit head
Delivers unit discharge under unit speed
Develops unit power under unit head
Develops unit power under unit speed
Increases with increase in pressure
Decreases with increase in pressure
More or less remains constant with increase in pressure
Unpredictable
Lift and resultant force
Drag and resultant force
Lift and tangential force
Lift and drag
Geometric similarity
Kinematic similarity
Dynamic similarity
None of these
Casing
Delivery pipe
Suction pipe
Impeller
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