Gce Model Questions Vol1 2022 Geography Question 9

Practice objective / multiple choice question 9 from the 2022 Gce Model Questions Vol1 Geography examination.

Gce Model Questions Vol1 2022 Geography Objective / Multiple Choice Medium Difficulty
Question 9 GCE_MODEL_QUESTIONS_VOL1 • 2022 • GEOGRAPHY • objective

Two open channels convey water down the same slope. Channel 1 is rectangular, 3 m wide and 1.2 m deep, with a slope of 0.001 and Manning's \(n = 0.030\). Channel 2 is trapezoidal with a bottom width of 2 m, side slopes of 1:1, a depth of 1.5 m, a slope of 0.0015 and Manning's \(n = 0.025\). Using Manning's equation, which channel has the greater discharge and by what factor (to one decimal place)?

Answer Options

A. Channel 2, about 1.8 times the discharge of Channel 1
B. Channel 1, about 2.5 times the discharge of Channel 2
Correct Answer C. Channel 2, about 2.5 times the discharge of Channel 1
D. Channel 2, about 3.0 times the discharge of Channel 1
Correct Answer
C
Correct Option:
Channel 2, about 2.5 times the discharge of Channel 1

About This Question

This is Gce Model Questions Vol1 2022 Geography Question 9. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Geography examination.

Difficulty level: Medium .

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