Red Seal Welding Practice Exam

When engaging in Plasma Arc Cutting (PAC), the open circuit voltage can vary depending on the specific machine and settings used. However, in general, the range of open circuit voltage for PAC typically falls within the range of 120-400V. Options A, C, and D are incorrect because they either fall outside of this range or have a narrow range that does not cover all possible voltage levels that can be present during PAC. It is important to note that the open circuit voltage for PAC should always be confirmed with the specific machine and settings being used to ensure safety and proper cutting performance. The open circuit voltage can also be affected by outside factors such as temperature and humidity, making it important to regularly check and adjust as needed.