CPT Manufacturing Processes & Assembly 3

Question 1

What is 'tolerance stack-up' in assembly?

Accepted Answer

The accumulation of individual part tolerances that can cause an assembly to exceed its overall tolerance

Answer

Tolerance stack-up occurs when individual part tolerances accumulate in an assembly, potentially causing the final assembly dimension to fall outside the acceptable range.

Question 2

In CNC machining, G-code G00 commands the machine to:

Accepted Answer

Rapid traverse to a position without cutting

Answer

G00 is the rapid positioning command that moves the tool to the specified coordinates at the machine's maximum traverse speed, not at a programmed feed rate.

Question 3

Which surface finishing process uses abrasive particles suspended in a fluid to remove material from a workpiece interior?

Accepted Answer

Abrasive flow machining

Answer

Abrasive flow machining (AFM) forces a semisolid abrasive media through or across a workpiece surface to deburr, polish, and radius edges in complex internal passages.

Question 4

When assembling a bolted joint, the correct sequence is typically:

Accepted Answer

Hand tighten all fasteners, then torque in a star pattern to full specification

Answer

Hand tightening all fasteners and then torquing in a cross (star) pattern evenly distributes clamping load and prevents gasket distortion or fastener binding.

Question 5

Which manufacturing process creates parts by compacting powdered metal in a die and then sintering the compact in a furnace?

Accepted Answer

Powder metallurgy (PM)

Answer

Powder metallurgy compacts metal powder into a desired shape and then sinters it below the melting point to bond the particles, producing near-net-shape parts with controlled porosity.

(CPT) Certified Production Technician Practice Test

(CPT) Certified Production Technician Practice Test

CPT Manufacturing Processes & Assembly 3