CPT Equipment Operation & Maintenance 3

Question 1

What is the function of the platen pressure gauge on a hydraulic press used in prosthetics?

Accepted Answer

It indicates the force being applied to the workpiece

Answer

The pressure gauge shows the force applied to the workpiece, allowing the technician to stay within safe limits for the material being formed.

Question 2

A vacuum-forming machine fails to achieve the target vacuum level. Which component should be checked first?

Accepted Answer

The vacuum pump oil level and intake filter

Answer

Low vacuum is most often caused by a dirty intake filter or low pump oil, both of which reduce pump efficiency.

Question 3

Which procedure is used to verify that a torque screwdriver is calibrated correctly before use on prosthetic components?

Accepted Answer

Compare its setting to a reference torque standard or calibrated tester

Answer

Calibration is verified by testing against a known reference torque standard to ensure accurate fastener tightening.

Question 4

When using a rotary tool (Dremel-type) for finishing carbon fiber prosthetic components, which bit type is most appropriate?

Accepted Answer

Diamond-coated or carbide burr

Answer

Diamond-coated or carbide burr bits are required for carbon fiber because its abrasive nature dulls standard steel quickly.

Question 5

After completing fiberglass lamination, how should the mixing cups and brushes be disposed of in a compliant US prosthetic lab?

Accepted Answer

Treated as hazardous waste per OSHA and local regulations

Answer

Uncured or partially cured resin waste is hazardous and must be disposed of according to OSHA and local hazardous waste regulations.

(CPT) Certified Prosthetic Technician Practice Test