Industrial Technology
Scope
Industrial Technology examines manufacturing systems, materials, measurement, automation, quality control, and production management. Questions often ask you to select a process, interpret a tolerance, or calculate output capacity from a workplace scenario.
Core rules
- CAD drawings use layers, dimensions, and tolerances; a tolerance is an allowed range, not a target value.
- Interchangeable production depends on specified fits and limits, so inspection must match the drawing requirement.
- Takt time sets the pace of production: available time divided by customer demand.
- Quality control distinguishes common-cause variation from special-cause variation; action depends on which is present.
- Automation safety requires guarding, interlocks, and lockout before maintenance.
Worked example
A line has 450 minutes of available production time per day and demand is 900 units. Takt time = 450 / 900 = 0.5 minute per unit, or 30 seconds. If the actual cycle time is 35 seconds, daily capacity is 450 x 60 / 35 = 771 units, which is below demand. Reasoning: takt time is the required pace, while actual cycle time determines real capacity; comparing them shows the shortfall.
Traps
Confusing takt time with actual cycle time leads to wrong capacity answers. Treating a tolerance as a single exact size rejects acceptable parts. Ignoring setup time overestimates available output. Bypassing an interlock is never a valid efficiency measure.