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NCCER Module 4- Power Tools Exam 2025 Questions and Answers Alternating Current (AC) - --Answer --The common power supplied to most all wired devices, where the current reverses its direction many times per second. AC power is the type of power generated and distributed throughout settled areas. Auger Bit - --Answer --A drill bit with a spiral cutting edge for boring holes in wood and other materials. Carbide - --Answer --A very hard material made of carbon and one or more heavy metals. Commonly used in one type of saw blade. Chuck - --Answer --A clamping device that holds an attachment; for example, the chuck of the drill holds the drill bit. Chuck Key - --Answer --A small, T-shaped steel piece used to open and close the chuck on power drills. Countersink - --Answer --A bit or drill used to set the head of a screw at or below the surface of the material. ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1