Civil Engineering MCQAE Level Civil Engineering
In irrigation, if the duty D (hectares per cumec) and delta delta (m) over the base period B (days) are related by:
Irrigation EngineeringDuty Delta RelationshipMEDIUM
Choose the correct answer
A
D = delta / (8.64 x B)
B
D = 8.64 x B / delta
C
D = B x delta / 8.64
D
D = 8.64 / (B x delta)
Correct Answer
B. D = 8.64 x B / delta
Why is this the answer?
Fundamental irrigation relation: D = 8.64 x B / delta, where D = duty (ha/cumec), B = base period (days), delta = consumptive delta (m). This ensures Q x T = D x delta x area, giving 1 cumec for B days supplies 8.64B/delta hectares.
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