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What cause is prime responsible for the heavy movement of water from main canal to branch canal?

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asked Jul 31, 2023 in Irrigation Engineering by Carter (75.2k points)

What cause is prime responsible for the heavy movement of water from main canal to branch canal?

(a) Existence of Favorable Gradient

(b) Velocity of Flow

(c) Type of Flow

(d) Depth of the Canal

I had been asked this question in an online interview.

Question is taken from Sediment Transport topic in section Sediment Transport and Irrigation Channels Design of Irrigation Engineering

irrigation engineering
sediment transport and irrigation channels design
sediment transport

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1 Answer

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answered Aug 15, 2023 by Greg (106k points)

Correct choice is (a) Existence of Favorable Gradient

For explanation: When a branch canal is connected to the main canal, the branch canal starts taking water discharge which reduces the discharge in main canal thereby reduces sediment load capacity. This leads to the deposition of sediment load which further diverts the flow towards branch canal. This process continues till all the water in the main canal gets discharged into branch canal. The prime cause of this phenomenon is due to the existence of favorable gradient in the branch canal.

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