Mechanical Aptitude Mechanical Aptitude Tool Identification and Use 2 — Questions and Answers
Question 1: Which tool is used to measure the inside diameter of a pipe or bore?
- Outside calipers
- Inside calipers (Correct answer)
- Micrometer
- Depth gauge
Correct answer: Inside calipers
Inside calipers are specifically designed to measure internal dimensions such as the inside diameter of pipes and bores.
Question 2: A torque wrench is used primarily to:
- Remove rusted bolts
- Apply a specific tightening force to a fastener (Correct answer)
- Measure bolt diameter
- Cut threaded rods
Correct answer: Apply a specific tightening force to a fastener
A torque wrench applies a precise, measurable rotational force (torque) to a fastener to prevent over- or under-tightening.
Question 3: What is the purpose of a tap and die set?
- Cutting sheet metal
- Creating or restoring internal and external threads (Correct answer)
- Measuring thread pitch
- Drilling pilot holes
Correct answer: Creating or restoring internal and external threads
A tap cuts internal threads (in holes) while a die cuts external threads (on rods or bolts).
Question 4: Which punch type is used to mark a center point before drilling?
- Pin punch
- Drift punch
- Center punch (Correct answer)
- Prick punch
Correct answer: Center punch
A center punch creates a small indentation that guides the drill bit and prevents it from walking on the surface.
Question 5: A hacksaw blade with more teeth per inch (TPI) is best suited for cutting:
- Large structural steel beams
- Thin-walled tubing and sheet metal (Correct answer)
- Hardwood lumber
- Concrete block
Correct answer: Thin-walled tubing and sheet metal
Higher TPI blades produce finer cuts and are required for thin materials to keep at least two teeth in contact with the workpiece.
Question 6: What tool would you use to check whether a surface is perfectly level?
- Plumb bob
- Spirit level (Correct answer)
- Protractor
- Feeler gauge
Correct answer: Spirit level
A spirit level uses a bubble in liquid-filled vials to indicate whether a surface is horizontal (level) or vertical (plumb).
Question 7: A pipe wrench differs from a standard adjustable wrench because it:
- Has a fixed jaw opening
- Uses serrated jaws that grip round objects (Correct answer)
- Is made of plastic
- Measures pipe diameter
Correct answer: Uses serrated jaws that grip round objects
Pipe wrenches have hardened, angled serrated teeth designed to bite into and grip cylindrical surfaces like pipes.
Mechanical Aptitude Mechanical Aptitude Tool Identification and Use 2
Which tool is used to measure the inside diameter of a pipe or bore?