Kennedy’s Theory

Q. Calculate the critical velocity (m/sec) of a channel using Kennedy's theory, the depth of flow is 3 m.

1. 0.84
2. 1.11
3. 2.7
4. 6

Q. Which of the following is the correct assumption of the Kennedy's theory?

1. Shape of regime channel is semicircular.
2. Silt is in suspension due to buoyancy force.
3. Silt is in suspension due to eddy formed from bottom of channel.
4. Silt is in suspension due to eddy formed from wetted permitter of channel.

Q. The depth of flow in an alluvial channel is 1.5 m. If critical velocity ratio is 1.1 and Manning's constant n is 0.018, the critical velocity of the channel as per Kennedy's method is

1. 0.713 m/s
2. 0.784 m/s
3. 0.879 m/s
4. 1.108 m/s

Q. The depth of flow in an alluvial channel is 2.5 m. If critical velocity ratio is 1.1, then the critical velocity of flow through the channel as per Kennedy's method is ___________ m/s.

1. 1.09

Q. On which of the canal systems, R.G. Kennedy, executive engineer in the Punjab Irrigation Department made his observations for proposing his theory on stable channels?

1. Krishna Western Delta Canals
2. Lower Bari Doab Canals
3. Lower Chenab Canals
4. Upper Bari Doab Canals

Q. Two alluvial channels of similar bed material carry water at a depth of 1 m and 0.8 m respectively. The ratio of critical velocity of water through them is____ (Use Kennedy's theory)

1. 1