DRILLS - Quiz

1) Which coolant oil is not diluted?

Blended oil Fatty oil Straight mineral oil Soluble oil

2) Which type of drill is used for drilling brass?

Quick helix Slow helix Standard helix Straight helix

3) Which part of the drilling machine helps for the protection of the operator?

Base Switch Belt guard Depth gauge and stop

4) Which drilling machine is used for light duty work?

Pillar drilling machine Radial drilling machine Column drilling machine Sensitive drilling machine

5) What is the purpose of reducing speed by 3/4th of turning while reaming?

To get max finish Avoid breakage of tool To reduce max material To give less depth of cut