NCCER Module 4- Power Tools Questions and Correct Answers/ Latest Update / Already Graded

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NCCER Module 4- Power Tools
Questions and Correct Answers/ Latest
Update / Already Graded
Alternating Current (AC)


Ans: 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


Ans: A drill bit with a spiral cutting edge for boring holes in wood and

other materials.




Carbide


Ans: A very hard material made of carbon and one or more heavy

metals. Commonly used in one type of saw blade.




Chuck

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Ans: A clamping device that holds an attachment; for example, the

chuck of the drill holds the drill bit.




Chuck Key


Ans: A small, T-shaped steel piece used to open and close the chuck on

power drills.




Countersink


Ans: A bit or drill used to set the head of a screw at or below the surface

of the material.




Direct Current (DC)


Ans: An electric power supply where the current flows in one direction

only. DC power is supplied by batteries and by transformer-rectifiers that

change AC power to DC.




Forstner Bit