Practice Test Geeks(CPT) Certified Production Technician Practice Test
← All CPT Flashcard Decks

Maintenance & Troubleshooting 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 Maintenance & Troubleshooting flashcards as text

  1. A PLC-controlled machine stops unexpectedly and the PLC shows no fault codes. The FIRST diagnostic step should be:

    Answer: Check all input devices and their signal status on the PLC monitor

    Monitoring input device status in the PLC program allows the technician to identify which sensor or switch caused the machine to stop without assuming component failure.

  2. Which lubrication method is best suited for high-speed bearings operating at elevated temperatures?

    Answer: Oil mist lubrication

    Oil mist lubrication delivers a fine aerosol of oil that effectively cools and lubricates high-speed bearings while minimizing churning losses.

  3. A drill press spindle develops excessive runout. Which tool is most appropriate to measure the magnitude of this runout?

    Answer: Dial test indicator (DTI)

    A dial test indicator mounted against the rotating spindle directly measures runout as the spindle turns.

  4. What is the correct interpretation of an oil analysis report showing a high iron particle count trending upward over several samples?

    Answer: Ferrous wear is accelerating and a component failure may be imminent

    A rising trend in iron particle count indicates accelerating ferrous metal wear inside the machine, which is a warning sign of impending component failure.

  5. A technician notices a V-belt drive is slipping under load. After tensioning the belt, it slips again within hours. The MOST likely root cause is:

    Answer: Sheave grooves worn smooth (glazed)

    Glazed or worn sheave grooves reduce friction grip on the belt, causing repeated slipping regardless of tension adjustments.

  6. Under OSHA's confined space standard, which classification requires a permit before entry?

    Answer: A space with a serious hazard such as atmospheric hazard or engulfment risk

    A permit-required confined space is defined by OSHA as one that contains or has the potential to contain a serious physical hazard, including atmospheric hazards or engulfment.

  7. A machine vision inspection system begins rejecting an abnormally high percentage of good parts. The most likely cause is:

    Answer: A shift in ambient lighting conditions affecting image quality

    Machine vision systems are sensitive to lighting; a change in ambient light (bulb burnout, daylight variation) can shift contrast and trigger false rejects.