1.

A ___________________ is also known as roto-hammer drill or masonry drill.(a) Rotary percussion drill(b) Steam hammer(c) Stop hammer(d) Tripod drillI got this question in an interview for internship.Query is from Equipments in section Construction Equipments of Construction & Building Materials

Answer»

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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