What is the result of increasing the Q of an impedance-matching circuit?
The correct answer is A: Matching bandwidth is decreased. What is the result of increasing the Q of an impedance-matching circuit is that matching bandwidth is decreased. Higher Q means narrower bandwidth. For amateur radio operators, this is important for circuit design. Understanding this helps when designing matching circuits.
Exam Tip
Increasing Q of matching circuit = matching bandwidth decreased. Think 'I'ncreasing 'Q' = 'N'arrower 'B'andwidth. Higher Q means narrower bandwidth. Not increased, not losses, not harmonics - just decreased bandwidth.
Memory Aid
"Increasing Q of matching circuit = matching bandwidth decreased. Think 'I'ncreasing 'Q' = 'N'arrower. Higher Q means narrower bandwidth. Important for circuit design."
Real-World Application
Increasing the Q of an impedance-matching circuit: The result is that matching bandwidth is decreased. Higher Q means the circuit is more selective (narrower bandwidth). This is the result - decreased matching bandwidth.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. Matching bandwidth increased isn't correct - higher Q decreases bandwidth. Increased is wrong.
Option C: Incorrect. Losses increase isn't the result - higher Q decreases bandwidth. Losses isn't the result.
Option D: Incorrect. Harmonics increase isn't the result - higher Q decreases bandwidth. Harmonics isn't the result.
题目解析
The correct answer is A: Matching bandwidth is decreased. What is the result of increasing the Q of an impedance-matching circuit is that matching bandwidth is decreased. Higher Q means narrower bandwidth. For amateur radio operators, this is important for circuit design. Understanding this helps when designing matching circuits.
考试技巧
Increasing Q of matching circuit = matching bandwidth decreased. Think 'I'ncreasing 'Q' = 'N'arrower 'B'andwidth. Higher Q means narrower bandwidth. Not increased, not losses, not harmonics - just decreased bandwidth.
记忆口诀
Increasing Q of matching circuit = matching bandwidth decreased. Think 'I'ncreasing 'Q' = 'N'arrower. Higher Q means narrower bandwidth. Important for circuit design.
实际应用示例
Increasing the Q of an impedance-matching circuit: The result is that matching bandwidth is decreased. Higher Q means the circuit is more selective (narrower bandwidth). This is the result - decreased matching bandwidth.
错误选项分析
Option B: Incorrect. Matching bandwidth increased isn't correct - higher Q decreases bandwidth. Increased is wrong. Option C: Incorrect. Losses increase isn't the result - higher Q decreases bandwidth. Losses isn't the result. Option D: Incorrect. Harmonics increase isn't the result - higher Q decreases bandwidth. Harmonics isn't the result.
知识点
Q of impedance-matching circuit, Increasing Q, Matching bandwidth, Decreased
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.