ASVAB Shop Information 4 — Questions and Answers
Question 1: What is the difference between a Phillips screwdriver and a Pozidriv screwdriver?
- Pozidriv has a square tip; Phillips has a cross tip
- Pozidriv has additional ribs between the cross slots for better grip and torque (Correct answer)
- Pozidriv is metric; Phillips is standard
- They are identical and interchangeable in all cases
Correct answer: Pozidriv has additional ribs between the cross slots for better grip and torque
Pozidriv screws have extra ribbed slots at 45° between the main cross slots, providing more contact points and reducing cam-out.
Question 2: In electrical work, what color is the standard neutral wire in US residential wiring?
- Black
- Green
- Red
- White (Correct answer)
Correct answer: White
In US residential wiring, white (or gray) identifies the neutral conductor, black is hot, and green or bare copper is ground.
Question 3: What tool is used to cut external threads onto a metal rod or bolt?
- Tap
- Die (Correct answer)
- Reamer
- Broach
Correct answer: Die
A die is used to cut external (male) threads onto a rod, while a tap cuts internal (female) threads into a hole.
Question 4: Which type of wood joint is created by interlocking a tenon into a mortise?
- Dovetail joint
- Mortise-and-tenon joint (Correct answer)
- Box joint
- Rabbet joint
Correct answer: Mortise-and-tenon joint
A mortise-and-tenon joint consists of a rectangular projection (tenon) fitted into a matching rectangular hole (mortise) for strong framing connections.
Question 5: What is the purpose of a feeler gauge?
- To measure the diameter of drill bits
- To measure small gaps or clearances between parts (Correct answer)
- To check the sharpness of a cutting blade
- To gauge the depth of a drilled hole
Correct answer: To measure small gaps or clearances between parts
A feeler gauge consists of thin metal strips of precise thickness used to measure narrow gaps, such as spark plug gaps or valve clearances.
Question 6: When welding, what is the primary purpose of a ground clamp?
- To hold the workpiece steady during welding
- To complete the electrical circuit by connecting the workpiece to the welder (Correct answer)
- To prevent the electrode from sticking
- To protect the welder from electric shock
Correct answer: To complete the electrical circuit by connecting the workpiece to the welder
The ground clamp completes the welding circuit by connecting the workpiece to the negative terminal of the welding machine.
Question 7: A brad nailer uses which type of fastener?
- Staples
- Framing nails
- Thin 18-gauge finish nails (brads) (Correct answer)
- Roofing nails
Correct answer: Thin 18-gauge finish nails (brads)
A brad nailer drives thin 18-gauge nails (brads) that leave minimal holes, ideal for delicate trim work where head visibility is a concern.
ASVAB Shop Information 4
What is the difference between a Phillips screwdriver and a Pozidriv screwdriver?