North Carolina Locksmith Practice Exam

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Which term refers to a locking device designed to fit in a mortise preparation?

Mortise
Hub
Finish
Knob Screw

The correct answer is: Mortise

The term that refers to a locking device designed to fit in a mortise preparation is "Mortise." Mortise locks are specifically constructed to be installed within a pocket, or mortise, cut into the edge of a door. This design allows for a more secure fit and a more robust locking mechanism, as the lock body is embedded within the door rather than mounted on its surface. Mortise locks typically provide a higher level of security compared to surface-mounted locks due to their design and construction, making them a common choice for residential and commercial applications. The other terms do not refer to locking devices designed for mortise preparations. "Hub" typically refers to a part of the locking mechanism involving the rotation of the cylinder or the connection point for different components. "Finish" refers to the surface treatment or color of the lock instead of its design or functionality. "Knob Screw" pertains to the hardware that secures a doorknob to the spindle but does not define a type of lock. Understanding these definitions and functionalities helps in selecting the appropriate locking mechanism for various applications.