NCCER MOD 4 Core Exam 2025 Questions and Answers

NCCER MOD 4 Core Exam 2025
Questions and Answers


When using power tools, never engage the _____.




a. locking spring

b. booster

c. bit shank


d. trigger lock - --Answer --trigger lock


Most hammer drills will not hammer until pressure is _____.




a. released from the powder charge

b. reached in the hydraulic cylinder

c. detected at the trigger lock


d. applied to the drill bit - --Answer --applied to the drill bit


A Porta-Power® is an example of a(n)


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, a. electric tool




b. pneumatic tool




c. hydraulic tool




d.battery-powered tool - --Answer --c. hydraulic tool


Before replacing parts such as bits, blades, or discs on any tool, you must _____.




a. polish it with a fine steel wool

b. recharge the tool's battery

c. disconnect the power source


d. inspect them for cracks - --Answer --Disconnect power source


A pneumatic drill is commonly used _____.




a. in areas where noise is a problem



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