0.15 to 0.3
0.4 to 0.5
0.6 to 0.9
1 to 1.5
C. 0.6 to 0.9
One-half
One-third
Two-third
Three-fourth
To store pressure energy which may be supplied to a machine later on
To increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure
To lift larger load by the application of a comparatively much smaller force
All of the above
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 the air or gas density
Inversely as square root of density
Inversely as density
As square of density
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
Directly as fan speed
Square of fan speed
Cube of fan speed
Square root of fan speed
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
1/√2
1/2
1
√2
Two
Four
Six
Eight
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
Fourneyron turbine
Journal turbine
Thomson's turbine
Pelton wheel
Waste valve closes suddenly
Supply pipe is long
Supply pipe is short
Ram chamber is large
Strain
Pressure
Kinetic
None of these
Low head
High head
High head and low discharge
Low head and high discharge
Product
Difference
Sum
None of these
Centrifugal pump
Mixed flow pump
Axial flow pump
Any one of the above
Impulse turbines
Reaction turbines
Axial flow turbines
Mixed flow turbines
Screw pump
Gear pump
Cam and piston pump
Plunger pump
Discharge a diameter
Head a speed²
Head a diameter
Power a speed⁴
Directly proportional to H1/2
Inversely proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
Horizontal
Nearly horizontal
Steep
First rise and then fall
0.15 to 0.3
0.4 to 0.5
0.6 to 0.9
1 to 1.5
40 %
50 %
60 %
80 %
N√P / H3/2
N√P / H²
N√P / H5/4
N√P / H3
Directly as fan speed
Square of fan speed
Cube of fan speed
Square root of fan speed
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
Impeller diameter
Speed
Fluid density
Both (A) and (B) above
2V/(vr - v)
2V/(vr + v)
V/(vr - v)
V/(vr + v)
The reaction turbines are used for low head and high discharge.
The angle of taper on draft tube is less than 8°.
An impulse turbine is generally fitted slightly above the tail race.
A Francis turbine is an impulse turbine.