General-purpose hand drilling is usually done with a ____ bit.
A) flute
B) tap drill
C) root
D) twist drill

Question

Quizplus · Accepted Answer

Twist drills are the most commonly used drill bits for general-purpose hand drilling. They have two cutting edges and spiral-shaped grooves (flutes) that help to remove the drilled material from the hole. Tap drills are used for cutting threads and are not generally used for drilling holes. Roots drills are used for enlarging existing holes and are not commonly used for general-purpose drilling.

General-Purpose Hand Drilling Is Usually Done with a ____ Bit