Practice Test Geeks(CABT) Certified Associate in Biomedical Technology Practice Test
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Equipment Maintenance and Troubleshooting Flashcards

7 cards from real CABT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Equipment Maintenance and Troubleshooting flashcards as text

  1. During a scheduled PM on an infusion pump, you discover the flow-rate accuracy is ±8% at 5 mL/hr. Most manufacturers specify accuracy within:

    Answer: ±5%

    Most infusion pump manufacturers and standards specify flow-rate accuracy within ±5% of the set rate across normal operating ranges.

  2. A surgical electrosurgical unit (ESU) causes interference on the patient monitor in the same OR. The first corrective step is to:

    Answer: Inspect and improve the ESU's return electrode contact

    Poor return-electrode contact forces stray ESU current through alternative paths, increasing electromagnetic interference; improving the pad contact is the first step.

  3. Which lubricant is generally recommended for O-rings in medical gas equipment?

    Answer: Silicone-based lubricant

    Silicone-based lubricants are oxygen-compatible and are recommended for O-rings in medical gas systems; petroleum-based products are fire hazards with oxygen.

  4. A hospital bed's nurse-call function is inoperative after repairs. What document should the technician consult to verify wiring?

    Answer: The manufacturer's service/wiring diagram

    The manufacturer's service manual and wiring diagram provides authoritative information on correct wiring, connectors, and signal paths for the nurse-call circuit.

  5. When inspecting a suction regulator, you note the vacuum gauge reads 0 mmHg even though the wall outlet is functional. The most likely fault is:

    Answer: Ruptured regulator diaphragm

    A ruptured diaphragm inside the regulator prevents the creation of negative pressure, causing the gauge to remain at zero despite a working vacuum source.

  6. The biomedical technician is setting up a preventive maintenance interval for a critical-care ventilator used 24/7. Which standard is the PRIMARY reference for PM frequency?

    Answer: Manufacturer's recommended maintenance schedule

    The manufacturer's recommended maintenance schedule, documented in the service manual, is the primary reference for PM intervals for medical devices.

  7. Which test is used to evaluate the integrity of the insulation on a line-powered medical device?

    Answer: Dielectric withstand (hipot) test

    The dielectric withstand (hipot) test applies a high voltage across the insulation to verify it will not break down under stress.