What is reactive power?
The correct answer is D: Wattless, nonproductive power. What is reactive power is wattless, nonproductive power. Reactive power doesn't do real work. For amateur radio operators, this is important for power theory. Understanding this helps when calculating power.
Exam Tip
Reactive power = wattless, nonproductive power. Think 'R'eactive 'P'ower = 'R'eturns 'P'eriodically (wattless). Reactive power doesn't do real work. Not circuit Q, not wire resistance, not consumed - just wattless, nonproductive.
Memory Aid
"Reactive power = wattless, nonproductive power. Think 'R'eactive 'P'ower = 'W'attless. Reactive power doesn't do real work. Important for power theory."
Real-World Application
Reactive power: It's wattless, nonproductive power. Reactive power oscillates between the source and load but doesn't do real work or consume energy. This is what reactive power is - wattless, nonproductive power.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Power consumed in circuit Q isn't reactive power - reactive power is wattless, nonproductive. Circuit Q isn't the definition.
Option B: Incorrect. Power consumed by inductor's wire resistance isn't reactive power - that's real power. Wire resistance isn't reactive power.
Option C: Incorrect. Power consumed in inductors and capacitors isn't accurate - reactive power is wattless, doesn't consume power. Consumed isn't accurate.
题目解析
The correct answer is D: Wattless, nonproductive power. What is reactive power is wattless, nonproductive power. Reactive power doesn't do real work. For amateur radio operators, this is important for power theory. Understanding this helps when calculating power.
考试技巧
Reactive power = wattless, nonproductive power. Think 'R'eactive 'P'ower = 'R'eturns 'P'eriodically (wattless). Reactive power doesn't do real work. Not circuit Q, not wire resistance, not consumed - just wattless, nonproductive.
记忆口诀
Reactive power = wattless, nonproductive power. Think 'R'eactive 'P'ower = 'W'attless. Reactive power doesn't do real work. Important for power theory.
实际应用示例
Reactive power: It's wattless, nonproductive power. Reactive power oscillates between the source and load but doesn't do real work or consume energy. This is what reactive power is - wattless, nonproductive power.
错误选项分析
Option A: Incorrect. Power consumed in circuit Q isn't reactive power - reactive power is wattless, nonproductive. Circuit Q isn't the definition. Option B: Incorrect. Power consumed by inductor's wire resistance isn't reactive power - that's real power. Wire resistance isn't reactive power. Option C: Incorrect. Power consumed in inductors and capacitors isn't accurate - reactive power is wattless, doesn't consume power. Consumed isn't accurate.
知识点
Reactive power, Wattless, nonproductive power, Power theory
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.