In what application is gallium arsenide used as a semiconductor material?
The correct answer is C: In microwave circuits. In what application is gallium arsenide used as a semiconductor material is in microwave circuits. GaAs is used for high-frequency applications like microwaves. For amateur radio operators, this is important for semiconductor knowledge. Understanding this helps when selecting semiconductors.
Exam Tip
Gallium arsenide application = microwave circuits. Think 'G'allium 'A'rsenide = 'G'ood for 'A'pplications at high frequency (microwave). GaAs is used for high-frequency applications like microwaves. Not high-current rectifier, not audio, not low-frequency - just microwave circuits.
Memory Aid
"Gallium arsenide application = microwave circuits. Think 'G'allium 'A'rsenide = 'M'icrowave. GaAs is used for high-frequency applications like microwaves. Important for semiconductor knowledge."
Real-World Application
Gallium arsenide: It's used as a semiconductor material in microwave circuits. GaAs has excellent high-frequency properties, making it ideal for microwave applications. This is the application - microwave circuits.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. High-current rectifier circuits isn't the application - GaAs is used in microwave circuits. High-current rectifier isn't the application.
Option B: Incorrect. High-power audio circuits isn't the application - GaAs is used in microwave circuits. Audio circuits isn't the application.
Option D: Incorrect. Very low-frequency RF circuits isn't the application - GaAs is used in microwave circuits. Low-frequency isn't the application.
题目解析
The correct answer is C: In microwave circuits. In what application is gallium arsenide used as a semiconductor material is in microwave circuits. GaAs is used for high-frequency applications like microwaves. For amateur radio operators, this is important for semiconductor knowledge. Understanding this helps when selecting semiconductors.
考试技巧
Gallium arsenide application = microwave circuits. Think 'G'allium 'A'rsenide = 'G'ood for 'A'pplications at high frequency (microwave). GaAs is used for high-frequency applications like microwaves. Not high-current rectifier, not audio, not low-frequency - just microwave circuits.
记忆口诀
Gallium arsenide application = microwave circuits. Think 'G'allium 'A'rsenide = 'M'icrowave. GaAs is used for high-frequency applications like microwaves. Important for semiconductor knowledge.
实际应用示例
Gallium arsenide: It's used as a semiconductor material in microwave circuits. GaAs has excellent high-frequency properties, making it ideal for microwave applications. This is the application - microwave circuits.
错误选项分析
Option A: Incorrect. High-current rectifier circuits isn't the application - GaAs is used in microwave circuits. High-current rectifier isn't the application. Option B: Incorrect. High-power audio circuits isn't the application - GaAs is used in microwave circuits. Audio circuits isn't the application. Option D: Incorrect. Very low-frequency RF circuits isn't the application - GaAs is used in microwave circuits. Low-frequency isn't the application.
知识点
Gallium arsenide, Semiconductor material, Application, Microwave circuits
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.