NCCER module 4 Questions and Answers 100%
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Trigger lock - โโA small lever, switch, or part that can be used to activate a locking catch or spring to
hold a power tool trigger in the operating mode without finger pressure.
alternating current - โโA flow of electric charge that regularly reverses its direction.
Reciprocating - โโa type of engine that processes air and fuel by a back and forth movement of its
internal parts
arbor - โโa shaded area
Carbide - โโA very hard material made of carbon and one or more heavy metals. Commonly used in
one type of saw blade.
abrasive - โโ(adj.) causing irritation, harsh; grinding or wearing down; (n.) a substance used to smooth
or polish
Chuck Key - โโused to change out drill bits on the handle of the flex shaft or hand drill
revolutions per minute - โโA unit of rotational speed. It is symbolized as rpm.
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