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A tube well having a capacity of 4 m³ /hour operates for 20 hours each day during the irrigation season. How much area can be commanded if the irrigation interval is 20 days and depth of irrigation is 7 cm?
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- 1.71 × 104 m²
- 1.14 × 104 m²
- 22.9 × 104 m²
- 2.29 × 104 m²
Correct Option: D
Total volume of water = Discharge of pump × pumping time per day × irrigation interval.
= 40 × 20 × 20 = 1600 m³
| Area that can be commanded = | = | ||
| Depth of water | 0.07 |
= 22857 m² = 2.29 × 104m²
