Shop Information Test Flashcards

What does the hardness rating on a grinding wheel (such as 'A' for soft to 'Z' for hard) indicate?

Answer: How firmly the abrasive grains are bonded

The hardness grade on a grinding wheel reflects the bond strength holding the abrasive grains — harder grades retain grains longer.

When cutting with a hacksaw, the blade teeth should face:

Answer: Away from the handle (forward)

Hacksaw blades are installed with teeth pointing forward (away from the handle) so they cut on the push stroke.

Which fastener type allows a joint to be disassembled and reassembled many times without losing holding strength?

Answer: Wood screw

Wood screws can be driven in and removed repeatedly while maintaining their grip, making them ideal for assemblies that need disassembly.

What is the purpose of a pilot hole when driving screws into hardwood?

Answer: To prevent the wood from splitting and ease screw insertion

A pilot hole slightly smaller than the screw shank relieves stress in the wood fibers, preventing splitting and reducing the torque needed.

What is 'runout' in a drill press or lathe?

Answer: The wobble or eccentricity of a rotating spindle or chuck

Runout is the deviation of a rotating tool or chuck from true center rotation, causing vibration and inaccurate holes or cuts.

Which of the following best describes the purpose of a wire nut (twist connector)?

Answer: To join and insulate two or more electrical wires together

A wire nut is twisted onto stripped wire ends to mechanically connect and electrically insulate them without soldering.

What type of wrench uses a non-slip grip that tightens around a fastener as more torque is applied?

Answer: Pipe (Stillson) wrench

A pipe wrench has serrated jaws on a pivoting heel that grip tighter as turning force increases, designed for round pipe and fittings.