IST Tool and Equipment Usage 1 — Questions and Answers
Question 1: What type of wrench should be used when precise torque specifications must be met?
- Adjustable wrench
- Torque wrench (Correct answer)
- Box-end wrench
- Pipe wrench
Correct answer: Torque wrench
A torque wrench allows the user to apply a specific, measurable amount of torque to a fastener.
Question 2: Which type of screwdriver bit is designed to resist cam-out (slipping) better than a standard Phillips head?
- Slotted
- Phillips
- Torx (star) (Correct answer)
- Robertson (square)
Correct answer: Torx (star)
Torx (star-shaped) bits are designed with straight-sided lobes that resist cam-out far better than Phillips bits.
Question 3: What is the correct procedure when using a file to smooth a metal surface?
- Apply pressure on both push and pull strokes
- Apply pressure only on the pull stroke
- Apply pressure only on the push (forward) stroke (Correct answer)
- Use rapid back-and-forth strokes with equal pressure
Correct answer: Apply pressure only on the push (forward) stroke
Files are designed to cut on the forward (push) stroke only; dragging them back damages the teeth.
Question 4: What is the primary purpose of a center punch in metalworking?
- To create a starting indentation for drilling (Correct answer)
- To remove material from a workpiece
- To measure the hardness of a metal surface
- To create decorative patterns in sheet metal
Correct answer: To create a starting indentation for drilling
A center punch creates a small indentation to guide the drill bit and prevent it from wandering when starting a hole.
Question 5: What safety precaution is most important before using a portable angle grinder?
- Ensure the disc is the correct RPM rating for the grinder (Correct answer)
- Apply cutting fluid to the disc before starting
- Check that the power cord is the correct length
- Ensure the workpiece is at least 3 feet off the ground
Correct answer: Ensure the disc is the correct RPM rating for the grinder
The disc's maximum RPM rating must meet or exceed the grinder's speed to prevent the disc from disintegrating at high speed.
Question 6: What is a vernier caliper primarily used to measure?
- Surface flatness
- Internal and external dimensions with high precision (Correct answer)
- The hardness of a material
- Thread pitch of fasteners
Correct answer: Internal and external dimensions with high precision
A vernier caliper measures internal dimensions, external dimensions, and depth with high precision, typically to 0.001 inch.
IST Tool and Equipment Usage 1
What type of wrench should be used when precise torque specifications must be met?