Manufacturing Processes & Production Flashcards
7 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Manufacturing Processes & Production flashcards as text
What is 'work hardening' (strain hardening) in metal manufacturing?
Answer: Strengthening of metal that occurs as it is plastically deformed at room temperature
Work hardening occurs when a metal is plastically deformed at room temperature, causing dislocation density to increase, which strengthens the metal but reduces its ductility.
In lean manufacturing, which of the seven wastes (muda) refers to producing more than what the customer currently needs?
Answer: Overproduction
Overproduction — making more than demanded — is considered the worst of the seven wastes because it creates or hides all other types of waste including excess inventory and motion.
Which additive manufacturing process uses a UV laser to selectively cure liquid photopolymer resin layer by layer?
Answer: Stereolithography (SLA)
Stereolithography (SLA) uses an ultraviolet laser to cure liquid photopolymer resin point by point, building parts with high accuracy and smooth surface finish.
What does 'cycle time' measure in a manufacturing process?
Answer: The time elapsed between completion of one unit and completion of the next
Cycle time is the elapsed time from when work begins on one unit to when work begins on the next unit, representing the actual rate of production.
In forging operations, what advantage does 'closed-die forging' have over 'open-die forging'?
Answer: Produces parts with tighter tolerances and more complex shapes
Closed-die (impression die) forging confines the workpiece in matched dies, producing parts with tighter dimensional tolerances and more complex geometries than open-die forging allows.
What is the purpose of 'andon' in a Toyota Production System (TPS) environment?
Answer: A visual or audible signal that alerts the team to a production problem or abnormality
Andon is a visual management tool — typically lights or a display board — that signals abnormal conditions on the production line, enabling immediate response to prevent defect propagation.
Which grinding wheel specification parameter indicates the hardness of the bond holding abrasive grains together?
Answer: Grade (hardness letter)
The grade (hardness) of a grinding wheel, indicated by a letter (A=soft to Z=hard), describes how strongly the bond holds the abrasive grains — harder grades retain grains longer.