Rotational flow
Radial
Forced spiral vortex flow
Spiral vortex flow
D. Spiral vortex flow
Same quantity of liquid
0.75 Q
Q/0.75
1.5 Q
An axial flow
An inward flow
An outward flow
A mixed flow
0.15 to 0.3
0.4 to 0.5
0.6 to 0.9
1 to 1.5
Rectilinear flow
Radial flow
Free vortex motion
Forced vortex
1/√2
1/2
1
√2
10-15°
20-25°
30-40°
50-60°
Kinetic head
Velocity head
Manometric head
Static head
Smoothen flow
Reduce acceleration to minimum
Increase pump efficiency
Save pump from cavitations
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
Two
Four
Six
Eight
Adjustable blades
Backward curved blades
Vaned diffusion casing
Inlet guide blades
Give high discharge
Produce high heads
Pump viscous fluids
All 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
Pelton wheel with one nozzle
Pelton wheel with two or more nozzles
Kaplan turbine
Francis turbine
Radially, axially
Axially, radially
Axially, axially
Radially, radially
10 r.p.m.
20 r.p.m.
40 r.p.m.
80 r.p.m.
39.2 %
49.2 %
68.8 %
84.8 %
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
[2(Vr - v) v]/ Vr²
2(Vr + v) v]/ Vr²
[(Vr - v) v]/ Vr
[(Vr + v) v]/ Vr
Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
Have identical forces
Full load speed
The speed at which turbine runner will be damaged
The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
The speed corresponding to maximum overload permissible
Q/√H
Q/H
Q/H3/2
Q/H²
Directly as the air or gas density
Inversely as square root of density
Inversely as density
As square of density
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.
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
Radial
Axial
Centrifugal
Vortex
Centrifugal pump
Mixed flow pump
Axial flow pump
Any one of the above
Screw pump
Gear pump
Cam and piston pump
Plunger pump
Closed
Open
Depends on starting condition and flow desired
Could be either open or closed
One-half
One-third
Two-third
Three-fourth