SSC JE Civil Engineering 29-Oct-2020 Shift 1 Paper

Question : 111 of 200

Marks: +1, -0

A certain crop needs 3 cumec of water for irrigating 5100 hectares land up to 10 cm depth. Total 12 watering at an interval of 10 days are needed. Duty and delta (in hectare/cumec and cm respectively) will be:

51000, 1200
15300, 0.12
1700, 120
510, 1.2

Validate

Solution:

Given:
Dicharge (Q) = 3 cumec
Area of land (A) = 5100 hectare
Than, duty =

5100/3

= 1700 hectare/cumec
For delta:
Water depth = 10 cm
Number of watering = 12
Then, delta = 12 x 10 = 120 cm

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