Out of 120 cm of water pumped into a canal, 80 cu m of water could be supplied to a field. 60 cu m of water was stored in the root zone while water required in root zone prior to irrigation was 80 cu m. The storage efficiency of irrigation is

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BPSC AE Paper VI Civil 19 Dec 2024 Official Paper
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  1. 75%
  2. 50%
  3. 100%
  4. 66.67%

Answer (Detailed Solution Below)

Option 1 : 75%
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Concept: 

Storage Efficiency of Irrigation

It is a measure of how effectively water is stored in the root zone during irrigation compared to the amount of water that was required in the root zone before irrigation. It is calculated using the ratio of water store to the water required, expressed as a percentage.

Calculations:

Given: Water stored in the root zone = 60 cum

Water required in the root zone prior to irrigation = 80 cum

Storage efficiency = (60/80) x 100 % = 75 %

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