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. A patient monitor displays an ECG waveform with excessive 60 Hz interference. What is the FIRST troubleshooting step?

    Answer: Check patient lead connections and skin preparation

    Poor electrode contact and skin preparation are the most common causes of 60 Hz artifact before replacing hardware.

  2. Which regulatory body requires biomedical equipment technicians to maintain a preventive maintenance program in US hospitals?

    Answer: The Joint Commission (TJC)

    The Joint Commission requires healthcare organizations to maintain an equipment management program including preventive maintenance.

  3. A defibrillator delivers energy via a capacitor. If the capacitor stores 360 J but only 200 J is delivered, what happened to the remaining energy?

    Answer: It was dissipated as heat in the inductor and internal resistance

    Energy not delivered to the patient is dissipated as heat within the discharge circuit components including the inductor and internal resistance.

  4. What is the purpose of isolation transformers in patient care areas?

    Answer: To prevent line-to-ground shock hazards in wet environments

    Isolation transformers break the direct connection to earth ground, preventing current flow through a patient in the event of a single fault.

  5. A ventilator's flow sensor reads inconsistently. Which component is MOST likely causing this in a heated wire flow sensor?

    Answer: Contamination or condensation on the sensing element

    Moisture and secretions contaminating the heated wire element disrupt thermal dissipation, causing inaccurate flow readings.

  6. According to NFPA 99, which category of electrical system must power life-safety equipment within 10 seconds of a power outage?

    Answer: Category 1 (Essential Electrical System - Life Safety Branch)

    NFPA 99 requires the Life Safety Branch of the Essential Electrical System to restore power within 10 seconds via emergency generators.

  7. What does a line isolation monitor (LIM) alarm indicate in an OR?

    Answer: The hazard current from line-to-ground fault has reached a threshold (typically 2 mA)

    A LIM continuously monitors impedance between each line and ground, alarming when leakage current approaches 2 mA, indicating a first-fault condition.