What is the purpose of a single point ground panel?
The correct answer is D: Ensure all lightning protectors activate at the same time. What is the purpose of a single point ground panel is to ensure all lightning protectors activate at the same time. Single point ground coordinates lightning protection. For amateur radio operators, this is important for station protection. Understanding this helps when installing grounding systems.
Exam Tip
Single point ground panel purpose = ensure all lightning protectors activate at same time. Think 'S'ingle 'P'oint 'G'round = 'S'ynchronized 'P'rotection 'G'rounding. Single point ground coordinates lightning protection. Not AC power removal, not common-mode transients, not air gaps - just synchronized protector activation.
Memory Aid
"Single point ground panel purpose = ensure all lightning protectors activate at same time. Think 'S'ingle 'P'oint 'G'round = 'S'ynchronized activation. Single point ground coordinates lightning protection. Important for station protection."
Real-World Application
A single point ground panel: Its purpose is to ensure all lightning protectors activate at the same time. By connecting all protectors to a single ground point, they all see the same voltage and activate simultaneously, providing coordinated protection. This is the purpose - synchronized protector activation.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Remove AC power in case of short-circuit isn't the purpose - single point ground ensures protectors activate together. AC power removal isn't the purpose.
Option B: Incorrect. Prevent common-mode transients isn't the purpose - single point ground ensures protectors activate together. Common-mode transients isn't the purpose.
Option C: Incorrect. Eliminate air gaps between protected and non-protected circuits isn't the purpose - single point ground ensures protectors activate together. Air gaps isn't the purpose.
题目解析
The correct answer is D: Ensure all lightning protectors activate at the same time. What is the purpose of a single point ground panel is to ensure all lightning protectors activate at the same time. Single point ground coordinates lightning protection. For amateur radio operators, this is important for station protection. Understanding this helps when installing grounding systems.
考试技巧
Single point ground panel purpose = ensure all lightning protectors activate at same time. Think 'S'ingle 'P'oint 'G'round = 'S'ynchronized 'P'rotection 'G'rounding. Single point ground coordinates lightning protection. Not AC power removal, not common-mode transients, not air gaps - just synchronized protector activation.
记忆口诀
Single point ground panel purpose = ensure all lightning protectors activate at same time. Think 'S'ingle 'P'oint 'G'round = 'S'ynchronized activation. Single point ground coordinates lightning protection. Important for station protection.
实际应用示例
A single point ground panel: Its purpose is to ensure all lightning protectors activate at the same time. By connecting all protectors to a single ground point, they all see the same voltage and activate simultaneously, providing coordinated protection. This is the purpose - synchronized protector activation.
错误选项分析
Option A: Incorrect. Remove AC power in case of short-circuit isn't the purpose - single point ground ensures protectors activate together. AC power removal isn't the purpose. Option B: Incorrect. Prevent common-mode transients isn't the purpose - single point ground ensures protectors activate together. Common-mode transients isn't the purpose. Option C: Incorrect. Eliminate air gaps between protected and non-protected circuits isn't the purpose - single point ground ensures protectors activate together. Air gaps isn't the purpose.
知识点
Single point ground panel, Purpose, Ensure all lightning protectors activate, Same time
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.