CBET General Practice 5

Question 1

When using a multimeter to measure AC voltage on a 120V circuit, the technician should set the range to:

Accepted Answer

A range equal to or above 120V to prevent meter damage

Answer

Always select a range at or above the expected voltage to prevent damage to the meter and ensure safe, accurate measurement.

Question 2

A hospital laboratory centrifuge vibrates excessively during operation. The MOST likely cause is:

Accepted Answer

An unbalanced load due to improperly paired or misplaced samples

Answer

Centrifuges must have balanced loads; unequal or improperly positioned samples create centrifugal force imbalance causing severe vibration.

Question 3

Which type of radiation is MOST effectively stopped by a thin sheet of aluminum foil?

Accepted Answer

Beta particles

Answer

Beta particles (electrons) have moderate penetration and are effectively shielded by a few millimeters of aluminum, unlike alpha (paper stops it) or gamma (requires dense shielding).

Question 4

A technician completing a work order should document which of the following to satisfy Joint Commission traceability requirements?

Accepted Answer

Device identification, service performed, test results, technician ID, and date

Answer

Joint Commission requires complete service records including device ID, work performed, test results, technician identification, and the service date for full traceability.

Question 5

The output impedance of a device should ideally be low because:

Accepted Answer

It minimizes signal voltage drop when driving a load

Answer

Low output impedance ensures minimal voltage drop across the source impedance when current flows, maintaining signal integrity to the load.

CBET - Certified Biomedical Equipment Technician Practice Test

CBET - Certified Biomedical Equipment Technician Practice Test

CBET General Practice 5