Kennedy's Theory: Silt Suspension Assumption
Kennedy's theory focuses on the transport of silt in open channels, particularly in the context of irrigation canals. It establishes criteria for channel design to prevent silting or scouring.
Core Assumption: Eddy Currents from Bottom
The fundamental assumption highlighted in Kennedy's theory is that silt particles remain suspended in the flow due to eddy currents generated from the bottom of the channel. These eddies create upward forces that balance the downward gravitational force on the silt particles.
Mechanism of Suspension
According to this assumption, the turbulence originating from the channel bed is the primary mechanism responsible for keeping the silt particles in motion and preventing them from settling. The velocity required to generate sufficient eddies is termed the 'critical velocity'.
Important Questions from Types of Irrigation
In which method of irrigation, the entire field is divided into number of levelled plots surrounded by levees ?
In border strip flooding method, the farm is divided into a series of strips
The technique of watering plants by making use of narrow tubes which deliver water directly at the base of the plant is called ________.
Which of the following states of India still uses the ancient bamboo drip irrigation method?
An irrigation scheme is known as minor, if command area is equal to or less than (in hectares)
