PAM Equipment Operation & Maintenance 2

Question 1

When calibrating an ultrasound unit, what is the recommended method to verify that the transducer is producing acoustic output?

Accepted Answer

Use a BNR (beam non-uniformity ratio) test tank or radiation force balance

Answer

A beam non-uniformity ratio test tank or radiation force balance is the standard method to objectively verify that an ultrasound transducer is producing the intended acoustic output.

Question 2

A TENS unit delivers no output despite fresh batteries and correct lead placement. What is the FIRST troubleshooting step?

Accepted Answer

Inspect lead wires and electrode connectors for breaks or corrosion

Answer

Lead wire or connector failure is the most common cause of no output in a TENS unit, and inspecting these components should be the first troubleshooting step.

Question 3

Which statement BEST describes the purpose of the duty cycle control on an ultrasound device?

Accepted Answer

It controls the ratio of on-time to total cycle time, determining thermal vs. non-thermal effects

Answer

The duty cycle on an ultrasound unit determines the percentage of time sound energy is emitted, distinguishing between thermal (continuous) and non-thermal (pulsed) treatment effects.

Question 4

Before storing a fluidotherapy unit after clinical use, what maintenance step is MOST important?

Accepted Answer

Clean the inlet filter and inspect the heating element thermostat

Answer

Cleaning the inlet filter prevents particle clogging that reduces airflow and heating efficiency, and thermostat inspection ensures safe temperature regulation during future use.

Question 5

What does a 'wet-test' safety check on a hydrotherapy whirlpool verify?

Accepted Answer

The GFCI (ground fault circuit interrupter) trips correctly under electrical fault conditions

Answer

A wet-test checks that the GFCI trips correctly, ensuring electrical safety by interrupting power when a ground fault is detected in the water-immersion environment.

(PAM) Physical Agent Modalities Certification Practice Test

(PAM) Physical Agent Modalities Certification Practice Test

PAM Equipment Operation & Maintenance 2