In a rectangular channel, the alternate depths are 1.5 m and 2.5 m respectively. The specific energy head (in meter) is

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BPSC AE Paper 6 (Civil) 14 Oct 2022 Official Paper
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  1. 4.48
  2. 3.35
  3. 3.26
  4. 3.06

Answer (Detailed Solution Below)

Option 4 : 3.06
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Concept:

The specific energy head in a rectangular channel with given alternate depths can be calculated using the formula:

Calculation:

Given:

  • Alternate depth \( y_1 = 1.5 \) m
  • Alternate depth \( y_2 = 2.5 \) m

Substitute the given values into the formula:

Calculate the numerator:

Calculate the denominator:

Calculate the specific energy head \( E \):

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