Discharge a diameter
Head a speed²
Head a diameter
Power a speed⁴
A. Discharge a diameter
Net head
Absolute velocity
Blade velocity
Flow
Pelton wheel
Francis turbine
Kaplan turbine
None of these
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
Rectilinear flow
Radial flow
Free vortex motion
Forced vortex
Pelton wheel
Kaplan turbine
Francis turbine
None of these
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
Geometric similarity
Kinematic similarity
Dynamic similarity
None of these
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
2V/(vr - v)
2V/(vr + v)
V/(vr - v)
V/(vr + v)
N√P / H3/2
N√P / H²
N√P / H5/4
N√P / H3
4
6
8
12
Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
Have identical forces
Rotational flow
Radial
Forced spiral vortex flow
Spiral vortex flow
Double
Three times
Four times
Five times
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
Pelton wheel with one nozzle
Pelton wheel with two or more nozzles
Kaplan turbine
Francis turbine
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
Equal to
1.2 times
1.8 times
Double
Two
Four
Six
Eight
Casing
Delivery pipe
Suction pipe
Impeller
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
An axial flow
An inward flow
An outward flow
A mixed flow
Power produced by the turbine to the energy actually supplied by the turbine
Actual work available at the turbine to 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
Kept fully closed
Kept fully open
Irrespective of any position
Kept 50% open
To run the turbine full
To prevent air to enter the turbine
To increase the head of water by an amount equal to the height of the runner outlet above the tail race
To transport water to downstream
(N√Q)/H2/3
(N√Q)/H3/4
(N√Q)/H
(N√Q)/H5/4
Hydraulic ram
Hydraulic intensifier
Hydraulic torque converter
Hydraulic accumulator
Suction pipe is short and pump is running at low speeds
Delivery pipe is long and pump is running at high speeds
Suction pipe is short and delivery pipe is long and the pump is running at low speeds
Suction pipe is long and delivery pipe is short and the pump is running at high speeds
0 to 4.5
10 to 100
80 to 200
250 to 300
Two jets
Two runners
Four jets
Four runners