Gce Model Questions Vol1 2024 Geography Question 9

Practice objective / multiple choice question 9 from the 2024 Gce Model Questions Vol1 Geography examination.

Gce Model Questions Vol1 2024 Geography Objective / Multiple Choice Medium Difficulty
Question 9 GCE_MODEL_QUESTIONS_VOL1 • 2024 • GEOGRAPHY • objective

A rectangular irrigation canal is 4 m wide and 2 m deep. Its slope is \(0.0015\) and the Manning roughness coefficient is \(n = 0.025\).\n(a) Calculate the maximum discharge of the canal in cubic metres per second using Manning's equation.\n(b) A farm downstream requires \(12{,}000\) m³ of water per day. Can the canal meet this demand? Show all steps.

Answer Options

A. Maximum discharge ≈ 10.2 m³\/s; daily capacity ≈ 880 000 m³, so the canal cannot meet the 12 000 m³/day demand.
Correct Answer B. Maximum discharge ≈ 12.4 m³/s; daily capacity ≈ 1 070 000 m³, so the canal can meet the 12 000 m³/day demand.
C. Maximum discharge ≈ 12.4 m³\/s; daily capacity ≈ 900 000 m³, so the canal can meet the 12 000 m³/day demand.
D. Maximum discharge ≈ 13.6 m³\/s; daily capacity ≈ 1 175 000 m³, so the canal can meet the 12 000 m³/day demand.
Correct Answer
B
Correct Option:
Maximum discharge ≈ 12.4 m³/s; daily capacity ≈ 1 070 000 m³, so the canal can meet the 12 000 m³/day demand.

About This Question

This is Gce Model Questions Vol1 2024 Geography Question 9. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Geography examination.

Difficulty level: Medium .

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