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A ___________________ is also known as roto-hammer drill or masonry drill.

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A ___________________ is also known as roto-hammer drill or masonry drill.

(a) Rotary percussion drill

(b) Steam hammer

(c) Stop hammer

(d) Tripod drill

I got this question in an interview for internship.

Query is from Equipments in section Construction Equipments of Construction & Building Materials

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The correct choice is (a) Rotary percussion drill

To elaborate: The Rotary hammer drill is a percussion drill that uses a weight to create the impact force on the masonry bit. Some styles of these drills are intended for masonry drilling only.

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