AIT Tools & Equipment 3 — Questions and Answers
Question 1: How frequently should power tool cords be inspected for damage?
- Once per year during scheduled maintenance
- Before each use (Correct answer)
- Monthly as part of a tool inventory
- Only when reduced performance is observed
Correct answer: Before each use
Power tool cords must be inspected before each use to identify cuts, fraying, exposed conductors, or damaged plugs that could result in electric shock or fire.
Question 2: What is the correct response when a power tool begins to overheat during use?
- Continue at reduced pressure and monitor temperature
- Shut it off and allow it to cool completely before resuming (Correct answer)
- Apply water or compressed air to cool it down quickly
- Increase speed briefly to complete the task faster
Correct answer: Shut it off and allow it to cool completely before resuming
An overheating tool should be immediately shut off and allowed to cool naturally; continuing use risks motor burnout, insulation failure, or fire.
Question 3: What is the recommended method for storing drill bits?
- Loose in a general toolbox drawer for easy access
- In a labeled index or case organized by size (Correct answer)
- Wrapped in shop rags to protect cutting edges
- Left installed in the drill chuck between uses
Correct answer: In a labeled index or case organized by size
Storing drill bits in a labeled index or case protects cutting edges from damage, organizes them by size for quick selection, and prevents loss.
Question 4: What substance is commonly applied to hand saw blades to reduce friction during cutting?
- Motor oil
- Paste wax or beeswax (Correct answer)
- WD-40 penetrating oil
- Lithium grease
Correct answer: Paste wax or beeswax
Paste wax or beeswax leaves a thin, dry lubricating film on saw blades that reduces friction and prevents rust without attracting sawdust like liquid lubricants.
Question 5: Why are torque specifications provided for fasteners in assemblies?
- To determine the correct drill bit size for pilot holes
- To ensure proper clamping force without over- or under-tightening (Correct answer)
- To specify the thread pitch of the fastener
- To indicate the fastener's material composition
Correct answer: To ensure proper clamping force without over- or under-tightening
Torque specifications ensure fasteners achieve the correct clamping force: under-torqued joints can loosen and fail, while over-torqued fasteners can strip threads or fracture.
Question 6: Before replacing a circular saw blade, the operator must first:
- Run the saw at the lowest speed setting
- Unplug the saw or remove the battery (Correct answer)
- Position the blade guard at maximum opening
- Have a second person hold the saw firmly
Correct answer: Unplug the saw or remove the battery
De-energizing the tool by unplugging it or removing the battery is required before any blade change to eliminate the risk of accidental start-up, consistent with lockout/tagout procedures.
Question 7: When a power tool produces unusual sounds or excessive vibration during operation, the correct action is to:
- Continue working and monitor whether the condition worsens
- Increase speed to work through the mechanical resistance
- Stop the tool immediately and inspect it before further use (Correct answer)
- Apply additional lubrication and resume operation
Correct answer: Stop the tool immediately and inspect it before further use
Unusual sounds or vibration indicate a potential mechanical fault; immediate shutdown and inspection prevent equipment damage, tool failure, and operator injury.
AIT Tools & Equipment 3
How frequently should power tool cords be inspected for damage?