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A _______________ Dredger consists of a pontoon carrying a frame in which a revolving boom is fixed.

(a) Grab

(b) Hydraulic

(c) Bucket ladder

(d) Dipper

The question was posed to me in my homework.

Question is from Earth Compaction Equipments in division Construction Equipments of Construction & Building Materials

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Right choice is (d) Dipper

To elaborate: The dipper stick connects the bucket and boom. The bucket is dredged by releasing and pulling the hoist cable. The dipper dredger is ideal for working in heavy grounds.

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