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The dredger which excavates sand deposits of a river and discharges the excavated material with water over long distances is called a _________________

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in Irrigation Engineering by (75.2k points)
The dredger which excavates sand deposits of a river and discharges the excavated material with water over long distances is called a _________________

(a) ladder dredger

(b) suction dredger

(c) dipper dredger

(d) upper dredger

I got this question in a job interview.

I'd like to ask this question from Navigable Waterways Requirements topic in section River Navigation & Tank Irrigation of Irrigation Engineering

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by (106k points)
Correct answer is (b) suction dredger

Best explanation: Dipper dredgers are used on small projects and are merely floating power shovels. Ladder dredger is used when the excavated materials are to be discharged at a considerable distance from the dredge. The disadvantage of the suction dredge is that it cannot operate in rocky or Shoulder River reaches.

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