Module 1 — Maintenance

Module quiz

5 questions on Module 1 — Maintenance. Answer them all, then check your score before moving on. 4 correct or more is a pass. Your best score is saved on this device, and to your account when you are signed in. This is a self-check, not an accredited assessment.

1. 1. A factory has no maintenance plan and repairs machines only when they stop. Why is this the most expensive way to run engineering?

   Repair technicians are paid more than plannersBreakdowns stop production at random, cause quality defects and force overtime, which costs far more than the repair itselfSpare parts cost more when bought urgentlyIt is not more expensive if repairs are quick

2. 2. A sewing machine starts skipping stitches intermittently. The operator keeps sewing to hold the target. What should happen?

   Nothing, since the faults are being caught at end-lineThe operator stops, flags the machine, and maintenance inspects it before more defective pieces are madeThe operator increases the stitch length to hide itMaintenance waits until the machine stops completely

3. 3. What distinguishes predictive maintenance from preventive maintenance?

   Predictive maintenance is done more oftenPredictive maintenance uses the machine's actual condition — vibration, temperature, oil and output data — to intervene just before failurePredictive maintenance is only for new machinesThere is no difference in practice

4. 4. How should minimum stock be set for a critical spare part with a long import lead time?

   By whatever fits the store roomFrom the part's criticality and lead time — enough to cover the lead time for the machines that cannot stopOne spare per machine, alwaysThe same minimum for every part

5. 5. Which work belongs to the operator in a well-run maintenance system?

   Replacing the motor bearingsFirst-level care: cleaning, lubrication, checking and reporting abnormal noise, heat or leaks every shiftRewiring the machineAnnual overhaul of the gearbox