COLORADO Plastic Manufacturing Technician Certification Exam Questions and Correct Answers

COLORADO PNEUMATIC SYSTEMS TEHNICIAN
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
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1. What is the primary working medium in pneumatic
systems?
A. Oil
B. Water
C. Compressed air
D. Steam
Rationale: Pneumatic systems use compressed gases—most
commonly air—to transmit and control energy.
Correct Answer: C. Compressed air


2. Which device is used to increase air pressure in a pneumatic
system?
A. Valve
B. Compressor
C. Actuator
D. Regulator

,Rationale: A compressor raises air pressure by reducing its
volume.
Correct Answer: B. Compressor


3. What is the function of a pneumatic actuator?
A. Convert air into heat
B. Convert air energy into mechanical motion
C. Store compressed air
D. Filter contaminants
Rationale: Actuators transform compressed air energy into
linear or rotary motion.
Correct Answer: B. Convert air energy into mechanical motion


4. Which component removes moisture from compressed air?
A. Lubricator
B. Dryer
C. Valve
D. Cylinder
Rationale: Air dryers eliminate water vapor to prevent
corrosion and system damage.
Correct Answer: B. Dryer


5. What is the standard unit of pressure in pneumatic
systems?

,A. Joule
B. Pascal
C. Newton
D. Watt
Rationale: Pressure is measured in Pascals (Pa), though PSI is
also commonly used in industry.
Correct Answer: B. Pascal


6. What is the purpose of a pressure regulator?
A. Increase air flow
B. Store air
C. Maintain constant downstream pressure
D. Cool compressed air
Rationale: Regulators ensure consistent pressure for safe and
stable operation.
Correct Answer: C. Maintain constant downstream pressure


7. Which valve allows air to flow in one direction only?
A. Shut-off valve
B. Relief valve
C. Check valve
D. Flow control valve
Rationale: Check valves prevent backflow in pneumatic circuits.
Correct Answer: C. Check valve

, 8. What is the main risk of excessive moisture in compressed
air systems?
A. Increased voltage
B. Corrosion and equipment damage
C. Faster airflow
D. Higher temperature stability
Rationale: Moisture causes rust, wear, and system failure.
Correct Answer: B. Corrosion and equipment damage


9. Which component stores compressed air for system
demand peaks?
A. Receiver tank
B. Valve manifold
C. Compressor belt
D. Filter element
Rationale: Receiver tanks act as storage reservoirs for
compressed air.
Correct Answer: A. Receiver tank


10. What is the function of a solenoid valve?
A. Converts air to electricity
B. Electrically controls airflow