SSC Question

A submerged weir is one in which the water level on the down streams side of the weir is :
  • a)
    Just at the crest level
  • b)
    below the crest level
  • c)
    above crest level
  • d)
    at the same elevation as water surface on upstream
Correct answer is option 'C'. Can you explain this answer?

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Answers

Knowledge Hub
May 17, 2021
When the water level on the downstream side of a weir is above the top surface of the weir, it is known as the submerged or drowned weir, as shown in the figure. The total discharge over such a weir is found out by splitting up the height of the water, above the sill of the weir, into two portions.

When the water level on the downstream side of a weir is above the top surface of the weir, it is known as the submerged or drowned weir, as shown in the figure. The total discharge over such a weir is found out by splitting up the height of the water, above the sill of the weir, into two portions.

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When the water level on the downstream side of a weir is above the top surface of the weir, it is known as the submerged or drowned weir, as shown in the figure. The total discharge over such a weir is found out by splitting up the height of the water, above the sill of the weir, into two portions.