22 Manufacturing Processes & Materials Practice Questions & Answers
Every Manufacturing Processes & Materials practice question from the Production Technician Practice Test, with the correct answer and a short explanation.
Start practice test →1. A cast iron pump housing needs internal passages that would be very hard to machine. Which process forms the part by filling a mold with molten metal?
- A.Surface grinding
- B.Drop forging
- C.Sheet metal stamping
- D.Sand casting✓ Answer
Casting fills a mold cavity with molten metal, and cores set inside the mold produce internal passages in a single step. Forging and stamping deform solid metal and cannot create closed internal cavities, and grinding only removes a thin surface layer.
Source: MSSC Certified Production Technician standards, Manufacturing Processes and Production content on production processes (casting)Report a problem with this question
2. A plant must produce millions of identical thermoplastic housings at a very low cost per piece. Which process best fits that requirement?
- A.Machining each housing from bar stock
- B.Hand layup of resin and fabric plies
- C.Pouring the housings in sand molds
- D.Injection molding in a steel mold✓ Answer
Injection molding forces molten thermoplastic into a hardened mold and ejects a finished part in seconds, so the high tooling cost is spread over a very large volume. Machining and hand layup have low tooling cost but far too much labor per piece, and sand casting is a metal process.
Source: MSSC Certified Production Technician standards, molding processes for polymersReport a problem with this question
3. How does forging shape a metal part?
- A.It fuses two pieces together at a heated joint
- B.It cuts chips away until the finished size is reached
- C.It melts the metal and pours it into a cavity
- D.It presses solid metal into shape, removing none✓ Answer
Forging is a bulk forming process: force from a hammer or press moves solid metal into the die shape, so almost no material is lost and the grain flow follows the part contour. Melting and pouring is casting, chip removal is machining, and fusing a joint is welding.
Source: MSSC Certified Production Technician standards, forming and forging processesReport a problem with this question
4. On a lathe the operator doubles the feed rate and leaves every other setting the same. What happens to the machined surface?
- A.The surface turns mirror bright
- B.The surface becomes rougher✓ Answer
- C.The surface becomes smoother
- D.The surface finish is unchanged
Feed is the distance the tool advances per revolution, so a larger feed leaves deeper, more widely spaced tool marks and a rougher finish. It also raises cutting force and heat, which shortens tool life, so a finishing pass is normally run at light feed.
Source: Standard machining practice; MSSC Certified Production Technician standards, machining process parametersReport a problem with this question
5. A gearbox cover must be taken off for scheduled service and put back on afterward. Which joining method suits it?
- A.Threaded bolts and lock nuts✓ Answer
- B.Solid rivets driven in place
- C.Fillet welds around the joint
- D.Structural adhesive bonding
Threaded fasteners make a non-permanent joint that can be loosened and retightened to a specified torque many times, which is what a serviceable cover needs. Welds, rivets and structural adhesive all create permanent joints that must be cut or destroyed to open.
Source: MSSC Certified Production Technician standards, joining processes (welding, fastening and adhesive bonding)Report a problem with this question
6. What makes additive manufacturing different from machining a part from solid stock?
- A.It squeezes molten plastic into a closed mold
- B.It cuts material away with a rotating tool
- C.It pours molten metal into a prepared mold
- D.It builds the part by adding material in layers✓ Answer
Additive manufacturing builds the part up layer by layer from a digital model, the opposite of subtractive machining, which starts oversize and removes chips. Because no die or mold is needed, it is well suited to prototypes, low volumes, tooling aids and shapes that cannot be cut.
Source: MSSC Certified Production Technician standards, additive manufacturing conceptsReport a problem with this question
7. Cold working has left a steel bracket hard and likely to crack if it is bent any further. Which heat treatment softens it and relieves internal stress?
- A.Flame hardening
- B.Quench hardening
- C.Full annealing✓ Answer
- D.Case carburizing
Annealing heats the steel and then cools it slowly, letting the deformed grain structure re-form so hardness drops, ductility returns and residual stress is relieved. The other three treatments are all intended to add hardness, which would make the cracking problem worse.
Source: MSSC Certified Production Technician standards, heat treating processesReport a problem with this question
8. A carbon steel frame will be used outdoors. Which finishing operation is applied mainly to protect it from corrosion?
- A.Polishing the welds bright
- B.Deburring the cut edges
- C.Bead blasting the surface
- D.Zinc coating the surface✓ Answer
A zinc coating both seals moisture away from the steel and corrodes sacrificially in place of the iron, so bare spots and scratches stay protected. Blasting, deburring and polishing change the surface texture or remove sharp edges but leave the steel unprotected.
Source: MSSC Certified Production Technician standards, finishing and coating processesReport a problem with this question
9. A planner is deciding between machining a bracket one at a time and building a stamping die for it. Which condition most favors building the die?
- A.Only one prototype is needed next week
- B.High volume spreads the tooling cost✓ Answer
- C.The design still changes week to week
- D.Fewer than ten parts will ever be built
Tooling is a fixed cost paid once, so the cost per piece falls as the quantity rises and a die only pays off across a large run. A single prototype, a design still in flux, or a handful of parts all favor a flexible low-tooling route such as machining.
Source: MSSC Certified Production Technician standards, relationship of process选择, volume and costReport a problem with this question
10. A magnet sticks firmly to a scrap piece in the metal bin. What does that tell the technician about the material?
- A.It is a metal that will never rust
- B.It is a ferrous metal containing iron✓ Answer
- C.It is aluminum or another light alloy
- D.It is a copper-based alloy such as brass
Ferrous metals are iron based, and that iron content is what makes them magnetic and prone to rust when moisture reaches bare surfaces. Aluminum, copper and brass are non-ferrous, contain no iron and are not attracted to a magnet, so the magnet test is a quick way to sort scrap.
Source: MSSC Certified Production Technician standards, engineering materials (ferrous and non-ferrous metals)Report a problem with this question
11. Which material property allows a copper rod to be drawn out into thin wire without breaking?
- A.Hardness
- B.Ductility✓ Answer
- C.Brittleness
- D.Elasticity
Ductility is the ability to undergo large permanent deformation in tension before fracture, which is exactly what wire drawing demands. Hardness is resistance to indentation, elasticity means the metal springs back to its original shape, and a brittle material would snap instead of stretching.
Source: MSSC Certified Production Technician standards, material propertiesReport a problem with this question
12. Trimmed scrap from a molding press is ground up, melted and molded again. Which material family behaves this way?
- A.Molded thermoplastics✓ Answer
- B.Cured thermoset resins
- C.Fired ceramic parts
- D.Vulcanized elastomers
Thermoplastics soften every time they are reheated because their molecular chains are not cross-linked, so regrind can be remelted and molded again within limits. Thermosets, vulcanized rubber and fired ceramics are permanently cross-linked or fused and will char, tear or crack rather than melt.
Source: MSSC Certified Production Technician standards, polymers (thermoplastics versus thermosets)Report a problem with this question
13. Which document moves with the job through the plant and lists, in order, the operations the part must go through?
- A.The bill of material list
- B.The packing slip in the box
- C.The routing sheet or traveler✓ Answer
- D.The invoice for the customer
The routing sheet, often called the traveler, stays with the job and shows each operation in sequence along with the work centers and sign-offs, so anyone can see where the part is and what comes next. The bill of material only lists components and quantities, and the packing slip and invoice belong to shipping and billing.
Source: MSSC Certified Production Technician standards, production documents (routing sheet and traveler)Report a problem with this question
14. A cell has 420 minutes of available production time in a shift, and the customer needs 210 units per shift. What is the takt time?
- A.2 minutes per unit✓ Answer
- B.4 minutes per unit
- C.210 minutes per unit
- D.0.5 minute per unit
Takt time is available production time divided by customer demand, so 420 minutes divided by 210 units equals 2 minutes per unit. It is the pace that demand sets, not a machine speed, and dividing demand by time instead gives 0.5, which is a rate in units per minute rather than a takt time.
Source: MSSC Certified Production Technician standards, production planning (takt time calculation)Report a problem with this question
15. Four stations on a line run in sequence with cycle times of 30, 45, 60 and 40 seconds. At best, how often can the line deliver a finished unit?
- A.One unit every 60 seconds✓ Answer
- B.One unit every 30 seconds
- C.One unit every 44 seconds
- D.One unit every 175 seconds
The slowest operation is the bottleneck and it sets the output rate of the whole line, so nothing downstream can be finished faster than one unit every 60 seconds. The 175 seconds figure is the sum of all four stations, which is closer to the time one piece takes to travel the line, and 44 seconds is the average, which no station actually runs at.
Source: MSSC Certified Production Technician standards, workflow coordination (bottleneck and throughput)Report a problem with this question
16. In a pull system, what tells an upstream station to make more parts?
- A.Free floor space at the machine
- B.The monthly forecast from planning
- C.A verbal order at the start of shift
- D.A kanban signal from the next process✓ Answer
In a pull system the downstream customer process authorizes replenishment with a kanban card, bin or electronic signal, so parts are made only after they are consumed. Building to a forecast or to whatever space is available is a push system, which piles up work in process that nobody has asked for yet.
Source: MSSC Certified Production Technician standards, just-in-time and pull productionReport a problem with this question
17. A stockroom holds sealed adhesive cartridges that have a shelf life. How should they be issued to the floor?
- A.Issue the oldest stock first✓ Answer
- B.Issue the newest cartridges first
- C.Issue the largest containers first
- D.Issue whichever box is closest
First-in, first-out rotation issues the oldest acceptable stock first so shelf-life material is consumed before its expiration date and none of it has to be scrapped. Picking the nearest or newest container leaves old material buried at the back of the rack until it expires.
Source: MSSC Certified Production Technician standards, inventory control and FIFO stock rotationReport a problem with this question
18. The material staged at a machine carries a different part number from the one printed on the work order. What should the operator do first?
- A.Stop and tell the supervisor✓ Answer
- B.Change the number on the order
- C.Run the job and note it later
- D.Swap in similar material nearby
Material has to match the part number, material specification and revision called out on the work order before the job runs, so a mismatch is reported to the supervisor or planner and the discrepancy is resolved first. Substituting a look-alike or editing the paperwork can scrap the entire lot and destroys the traceability record.
Source: MSSC Certified Production Technician standards, verifying resources against the work orderReport a problem with this question
19. Why does a long changeover between two products raise the cost of the parts that follow?
- A.Tooling wears faster during setup than in a run
- B.Setup labor is billed straight to the customer
- C.Changeover minutes are reported as scrap units
- D.The machine makes no parts while it is being changed✓ Answer
Changeover consumes machine capacity without producing anything, and that lost time is spread across the parts made in the run that follows, so short runs carry the most setup cost per piece. This is why quick-changeover work moves as many setup steps as possible off-line, doing them while the machine is still running the previous job.
Source: MSSC Certified Production Technician standards, setup and changeover as production costReport a problem with this question
20. Every carton carries a lot number that is scanned at each operation. What does this practice mainly give the plant?
- A.Proof that the order shipped on time
- B.Traceability of the affected units✓ Answer
- C.A guarantee the part meets the print
- D.A substitute for the packing slip
Lot coding plus a scan at each step links every unit to the raw material, machine and operators that produced it, so if a defect or a bad material lot appears later, exactly which units are involved can be identified and contained. Scanning records history, it does not verify dimensions or replace shipping paperwork.
Source: MSSC Certified Production Technician standards, production reporting, labeling and lot traceabilityReport a problem with this question
21. How do augmented reality work instructions differ from virtual reality?
- A.They print the instructions at the workstation
- B.They run the machine with no operator present
- C.They overlay information on the real workspace✓ Answer
- D.They replace the workspace with a simulation
Augmented reality adds a digital layer, such as the next step, an arrow or a part number, on top of what the technician actually sees through a headset or tablet, so hands and eyes stay on the real job. Virtual reality replaces the real view entirely, which suits off-line training but not live assembly or setup work.
Source: MSSC Certified Production Technician standards, Industry 4.0 concepts (augmented reality)Report a problem with this question
22. Machines on a line send vibration and temperature readings to a plant dashboard in real time. What is the main shop-floor benefit?
- A.Start-up checks in the manual can be skipped
- B.Written maintenance records are no longer kept
- C.A developing problem can be caught before failure✓ Answer
- D.Machine guards can be opened while running
Connected sensors report machine condition continuously, so a rising vibration or temperature trend is visible while the equipment still runs and the repair can be scheduled instead of becoming an unplanned breakdown. Collecting data does not remove the duty to keep records, follow the manufacturer's start-up procedure, or leave guards in place.
Source: MSSC Certified Production Technician standards, Industry 4.0 concepts (industrial internet of things and production data analytics)Report a problem with this question
Practice questions based on the MSSC Production Standards and the published content of the Certified Production Technician modules, together with federal OSHA general-industry requirements and standard manufacturing practice. MSSC and CPT are marks of the Manufacturing Skills Standards Council; this site is not affiliated with or endorsed by MSSC. Questions here never depend on recalling a regulatory limit, a citation number or a machine specification — always follow your own facility's written programs and the manufacturer's documentation for the equipment you run, and confirm current requirements before testing. About the CPT certification →