What coordinate system is often used to display the phase angle of a circuit containing resistance, inductive, and/or capacitive reactance?
The correct answer is D: Polar coordinates. What coordinate system is often used to display the phase angle of a circuit containing resistance, inductive, and/or capacitive reactance is polar coordinates. Polar coordinates show magnitude and phase angle. For amateur radio operators, this is important for circuit analysis. Understanding this helps when analyzing phase.
Exam Tip
Coordinate system for phase angle = polar coordinates. Think 'P'hase 'A'ngle = 'P'olar coordinates. Polar coordinates show magnitude and phase angle. Not Maidenhead grid, not Faraday grid, not elliptical - just polar coordinates.
Memory Aid
"Coordinate system for phase angle = polar coordinates. Think 'P'hase 'A'ngle = 'P'olar. Polar coordinates show magnitude and phase angle. Important for circuit analysis."
Real-World Application
Displaying the phase angle of a circuit containing resistance, inductive, and/or capacitive reactance: Polar coordinates are often used. Polar coordinates show both magnitude and phase angle (e.g., 50∠30°). This is the coordinate system - polar coordinates for phase angle.
Key Concepts
Why Other Options Are Wrong
Option A (Maidenhead grid): Incorrect. Maidenhead grid is for geographic location, not phase angle - polar coordinates show phase angle. Maidenhead grid isn't the system.
Option B (Faraday grid): Incorrect. Faraday grid isn't a coordinate system for phase - polar coordinates show phase angle. Faraday grid isn't the system.
Option C (Elliptical coordinates): Incorrect. Elliptical coordinates aren't used for phase - polar coordinates show phase angle. Elliptical coordinates isn't the system.
题目解析
The correct answer is D: Polar coordinates. What coordinate system is often used to display the phase angle of a circuit containing resistance, inductive, and/or capacitive reactance is polar coordinates. Polar coordinates show magnitude and phase angle. For amateur radio operators, this is important for circuit analysis. Understanding this helps when analyzing phase.
考试技巧
Coordinate system for phase angle = polar coordinates. Think 'P'hase 'A'ngle = 'P'olar coordinates. Polar coordinates show magnitude and phase angle. Not Maidenhead grid, not Faraday grid, not elliptical - just polar coordinates.
记忆口诀
Coordinate system for phase angle = polar coordinates. Think 'P'hase 'A'ngle = 'P'olar. Polar coordinates show magnitude and phase angle. Important for circuit analysis.
实际应用示例
Displaying the phase angle of a circuit containing resistance, inductive, and/or capacitive reactance: Polar coordinates are often used. Polar coordinates show both magnitude and phase angle (e.g., 50∠30°). This is the coordinate system - polar coordinates for phase angle.
错误选项分析
Option A (Maidenhead grid): Incorrect. Maidenhead grid is for geographic location, not phase angle - polar coordinates show phase angle. Maidenhead grid isn't the system. Option B (Faraday grid): Incorrect. Faraday grid isn't a coordinate system for phase - polar coordinates show phase angle. Faraday grid isn't the system. Option C (Elliptical coordinates): Incorrect. Elliptical coordinates aren't used for phase - polar coordinates show phase angle. Elliptical coordinates isn't the system.
知识点
Coordinate system, Display phase angle, Circuit containing resistance, Inductive and/or capacitive reactance, Polar coordinates
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.