1. Rishabh Boonlia
VIT University

3.  High heads(350 m and above): Pelton turbine
 Reaction turbines not suitable (losses)
 Medium heads: Francis turbine (sometimes
impulse turbines can also be used)
 Low heads(below 60 m): Propeller type of
turbine is used.

4.  Hydrological Data:
 „ The maximum working head
 „ The design Head
 „ The design discharge
 Available discharge
 Speed and nature of load

5.  Type of turbine:
(for e.g. adjustable blade axial flow turbine or a
kaplan turbine)
 The power generated( in bhp):
 Diameter of the hydraulic turbine
 Rotational speed

7. 

8. Spiral casings are either made of metal for heads
ranging from 40 to over 200m or of concrete for
low and medium heads, i.e. up to 75m

9. The role of the draft tube is to convert kinetic
energy into pressure energy with a minimum of
losses
 Straight conical draft tube
 Elbow draft tube

11. A propeller-type runner rated 28,000 hp (21 MW)

12.  Vertical shaft: (for reaction turbines)
 Great variations of tail water level
 Deep foundations, as the weight of the rotating
parts acts in the same direction of the axial
hydraulic thrust
 Horizontal shaft: (for impulse turbines)
 Grouping of two or more runners can be done
 Foundations are not that deep, but occupy
more surface area