_________________ is a self-propelled drill.(a) Percussion drilling(b) Shot drill(c) Blasthole drill(d) Diamond drillThe question was posed to me in a national level competition.This intriguing question comes from Equipments topic in chapter Construction Equipments of Construction & Building Materials

_________________ is a self-propelled drill.(a) Percussion drilling(b)

1.	_________________ is a self-propelled drill.(a) Percussion drilling(b) Shot drill(c) Blasthole drill(d) Diamond drillThe question was posed to me in a national level competition.This intriguing question comes from Equipments topic in chapter Construction Equipments of Construction & Building Materials
Answer» The correct OPTION is (c) Blasthole drill The EXPLANATION is: The Blasthole drill is a SELF PROPELLED drill and it is MOUNTED on a truck or on a Crawler truck. This drills are suitable for drilling operations of soft to medium rocks.

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