FREE CRL Lock Installation & Repair Questions and Answers

Question 1

Which of the following is the most appropriate tool for mortising a door for lock installation?

Accepted Answer

Mortising jig

Answer

Screwdriver

Answer

Wood chisel

Answer

Auger bit

Question 2

What is the standard backset measurement for most residential locksets?

Accepted Answer

2-3/4 inches

Answer

2 inches

Answer

3 inches

Answer

3-1/4 inches

Question 3

When installing a deadbolt, what should be checked to ensure smooth operation?

Accepted Answer

Strike plate alignment

Answer

Color of the bolt

Answer

Door paint finish

Answer

Doorknob tension

Question 4

What is the function of a latch bolt?

Accepted Answer

To extend and hold the door shut

Answer

To connect the knob to the lock

Answer

To guide the key into the cylinder

Answer

To rotate the cylinder

Question 5

Which component prevents a lock cylinder from being turned without a key?

Accepted Answer

Pin tumblers

Answer

Strike plate

Answer

Retainer clip

Answer

Cam lock

Question 6

Which tool is best for removing a broken key from a lock cylinder?

Accepted Answer

Key extractor

Answer

Lock pick

Answer

Screw extractor

Answer

Needle nose pliers

Question 7

What is the main reason to install a reinforcing strike plate?

Accepted Answer

Increase door security

Answer

Aesthetic appeal

Answer

Reduce installation time

Answer

Prevent bolt retraction

Question 8

What is the purpose of a cylinder retaining clip?

Accepted Answer

Secure the cylinder in place

Answer

Prevent cylinder rotation

Answer

Connect cylinder to bolt

Answer

Seal the keyway

Question 9

Which lock type is most commonly used for securing exterior residential doors?

Accepted Answer

Deadbolt

Answer

Cam lock

Answer

Tumbler lock

Answer

Padlock