Heavy Duty Equipment Technician Red Seal Exam Prep · Question
When setting up a plasma arc cutting (PAC) system, what is the primary purpose of the pilot arc?
The pilot arc creates a small, high-voltage arc between the electrode and nozzle within the torch, ionizing the gas to create a conductive path that allows the
Start free practice for Heavy Duty Equipment Technician Red Seal Exam Prep
300 questions · no signup required · 40 free questions per day
Question: When setting up a plasma arc cutting (PAC) system, what is the primary purpose of the pilot arc?
Answer options:
- To preheat the material before the main cutting arc starts. ✅ To ionize the gas and establish a conductive path for the main cutting arc.
- To clean the cutting area of contaminants.
- To provide a controlled current limit for the main power supply.
Correct answer: To ionize the gas and establish a conductive path for the main cutting arc.
Explanation: The pilot arc creates a small, high-voltage arc between the electrode and nozzle within the torch, ionizing the gas to create a conductive path that allows the main cutting arc to transfer to the workpiece once current is applied.
Start free practice for Heavy Duty Equipment Technician Red Seal Exam Prep
300 questions · no signup required · 40 free questions per day
More about Heavy Duty Equipment Technician Red Seal Exam Prep
Related Questions
- What is the primary purpose of a 'lock-up clutch' in a modern heavy-duty torque converter?
- A technician is performing a visual inspection of a heavy-duty truck's air brake system. Which of the followin
- During a pre-trip inspection of an air-braked commercial vehicle, the operator observes a sudden drop in air p
- A technician is preparing to lift a heavy engine component using a shop crane. The component's manufacturer sp
- A technician has completed a repair on a hydraulic cylinder on a piece of articulated equipment. Before connec
- A technician is installing a new final drive assembly on an excavator. The assembly weighs approximately 250 k
More for Heavy Duty Equipment Technician Red Seal Exam Prep candidates
FAQs
Question explanations
- What is the primary purpose of a 'lock-up clutch' in a modern heavy-duty torque converter?
- A technician is performing a visual inspection of a heavy-duty truck's air brake system. Which of the followin
- During a pre-trip inspection of an air-braked commercial vehicle, the operator observes a sudden drop in air p
- A technician is preparing to lift a heavy engine component using a shop crane. The component's manufacturer sp
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Heavy Duty Equipment Technician Red Seal Exam Prep Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.