CBET Electronics and Electrical Safety 3

Question 1

What does the acronym GFCI stand for, and what is its primary function in healthcare facilities?

Accepted Answer

Ground Fault Circuit Interrupter - detects imbalance between hot and neutral conductors and disconnects power

Answer

General Frequency Control Interface - regulates power frequency

Answer

Grounded Facility Circuit Inspector - monitors building ground connections

Answer

Ground Fuse Current Inhibitor - limits maximum current

Question 2

In troubleshooting a medical device power supply, you measure 0V DC output but 120V AC input is present. Which component is most likely failed?

Accepted Answer

Bridge rectifier or filter capacitor

Answer

Input fuse

Answer

Power cord

Answer

Wall outlet

Question 3

What is the minimum recommended testing frequency for electrical safety inspections of patient care equipment according to NFPA 99?

Accepted Answer

Annually

Answer

Monthly

Answer

Every 6 months

Answer

Every 2 years

Question 4

What is the purpose of a snubber circuit across relay contacts in medical equipment?

Accepted Answer

To suppress voltage spikes caused by inductive load switching

Answer

To increase switching speed of the relay

Answer

To reduce power consumption of the relay coil

Answer

To provide visual indication of relay state

Question 5

What does the term 'equipotential grounding' mean in the context of a hospital operating room?

Accepted Answer

All conductive surfaces within patient reach are connected to a common ground point

Answer

All equipment is powered from the same circuit breaker

Answer

All equipment uses the same voltage level

Answer

All ground wires are the same length

Question 6

Which type of electrical safety analyzer measurement verifies that a medical device will not deliver hazardous current through the patient connection?

Accepted Answer

Patient leakage current test

Answer

Ground wire resistance test

Answer

Insulation resistance test

Answer

Hipot (dielectric strength) test