Practice Test GeeksCBET - Certified Biomedical Equipment Technician Practice Test
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Ultimate Flashcards

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

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  1. When testing ground wire resistance on patient care equipment, AAMI ES1 specifies the resistance should not exceed:

    Answer: 0.1 ohm

    AAMI ES1 specifies that ground wire resistance from chassis to the ground pin of the power cord should not exceed 0.1 ohm.

  2. A pulse oximeter reads SpO2 at 85% but the patient appears clinically stable. What artifact is MOST likely causing a falsely low reading?

    Answer: Motion artifact or poor perfusion at the probe site

    Motion and poor peripheral perfusion are the most common causes of falsely low SpO2 readings with pulse oximetry.

  3. Which sterilization method is MOST appropriate for heat-sensitive flexible endoscopes?

    Answer: Ethylene oxide (EtO) gas sterilization

    Ethylene oxide sterilizes at low temperatures (~55°C), making it suitable for heat- and moisture-sensitive devices like flexible endoscopes.

  4. In an infusion pump, what is the primary purpose of the air-in-line detector?

    Answer: To detect air bubbles that could cause air embolism

    The air-in-line detector uses ultrasonic sensing to stop the pump when air bubbles are detected, preventing venous air embolism.

  5. What is the function of a ballast in fluorescent surgical lighting?

    Answer: To limit current and stabilize the arc discharge in the lamp

    The ballast provides starting voltage and then limits current to prevent the lamp's negative resistance characteristic from causing a runaway increase in current.

  6. A hospital-grade receptacle has which distinguishing feature compared to standard commercial receptacles?

    Answer: Green dot marking and heavier-duty contacts with greater retention force

    Hospital-grade receptacles are identified by a green dot and are constructed with heavy-duty contacts that maintain secure plug retention to prevent unintentional disconnection.

  7. When inspecting a surgical electrosurgical unit (ESU), which parameter is tested to verify patient safety?

    Answer: Return electrode contact quality monitoring (RECM) threshold

    Return electrode contact quality monitoring (RECM) verifies that the dispersive electrode has adequate contact area to prevent burns at the return site.