What is a possible effect of a resonant ground connection?
The correct answer is C: High RF voltages on the enclosures of station equipment. A possible effect of a resonant ground connection is high RF voltages on the enclosures of station equipment. A resonant ground connection has high impedance at certain frequencies, preventing effective grounding and allowing RF voltage to build up. For amateur radio operators, this is a safety concern. Understanding this helps prevent RF hazards.
Exam Tip
Resonant ground effect = high RF voltages on equipment enclosures. Think 'R'esonant 'G'round = 'R'F 'G'ets high voltage. Resonant ground has high impedance, preventing effective grounding and allowing RF voltage buildup. Not overheating, not corrosion, not ground loops - just high RF voltages.
Memory Aid
"Resonant ground effect = high RF voltages on equipment enclosures. Think 'R'esonant 'G'round = 'R'F 'G'ets high voltage. Resonant ground has high impedance, allowing RF voltage buildup. Safety concern that proper grounding prevents."
Real-World Application
Your ground connection is resonant at your operating frequency (e.g., ground wire length creates resonance). The resonant ground has high impedance, preventing RF from flowing to ground effectively. RF voltage builds up on equipment enclosures, creating a shock hazard. Proper non-resonant grounding prevents this.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Resonant ground doesn't cause overheating of ground straps - overheating comes from excessive current, not resonance. Overheating isn't the effect.
Option B: Incorrect. Resonant ground doesn't cause corrosion - corrosion comes from chemical/electrolytic action, not resonance. Corrosion isn't the effect.
Option D: Incorrect. Resonant ground doesn't cause ground loops - ground loops come from multiple ground paths, not resonance. Ground loops are different.
题目解析
The correct answer is C: High RF voltages on the enclosures of station equipment. A possible effect of a resonant ground connection is high RF voltages on the enclosures of station equipment. A resonant ground connection has high impedance at certain frequencies, preventing effective grounding and allowing RF voltage to build up. For amateur radio operators, this is a safety concern. Understanding this helps prevent RF hazards.
考试技巧
Resonant ground effect = high RF voltages on equipment enclosures. Think 'R'esonant 'G'round = 'R'F 'G'ets high voltage. Resonant ground has high impedance, preventing effective grounding and allowing RF voltage buildup. Not overheating, not corrosion, not ground loops - just high RF voltages.
记忆口诀
Resonant ground effect = high RF voltages on equipment enclosures. Think 'R'esonant 'G'round = 'R'F 'G'ets high voltage. Resonant ground has high impedance, allowing RF voltage buildup. Safety concern that proper grounding prevents.
实际应用示例
Your ground connection is resonant at your operating frequency (e.g., ground wire length creates resonance). The resonant ground has high impedance, preventing RF from flowing to ground effectively. RF voltage builds up on equipment enclosures, creating a shock hazard. Proper non-resonant grounding prevents this.
错误选项分析
Option A: Incorrect. Resonant ground doesn't cause overheating of ground straps - overheating comes from excessive current, not resonance. Overheating isn't the effect. Option B: Incorrect. Resonant ground doesn't cause corrosion - corrosion comes from chemical/electrolytic action, not resonance. Corrosion isn't the effect. Option D: Incorrect. Resonant ground doesn't cause ground loops - ground loops come from multiple ground paths, not resonance. Ground loops are different.
知识点
Resonant ground connection, High RF voltages, Equipment enclosures, RF safety
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.