Why are cores of inductors and transformers sometimes constructed of thin layers?
The correct answer is B: To reduce power loss from eddy currents in the core. Why are cores of inductors and transformers sometimes constructed of thin layers is to reduce power loss from eddy currents in the core. Laminated cores reduce eddy current losses. For amateur radio operators, this is important for component knowledge. Understanding this helps when working with inductors and transformers.
Exam Tip
Thin layer cores = reduce power loss from eddy currents. Think 'T'hin 'L'ayers = 'T'rap 'L'ess eddy currents. Laminated cores reduce eddy current losses. Not manufacturing simplicity, not cutoff frequency, not cost saving - just reduce eddy current losses.
Memory Aid
"Thin layer cores = reduce power loss from eddy currents. Think 'T'hin 'L'ayers = 'E'ddy current reduction. Laminated cores reduce eddy current losses. Important for component knowledge."
Real-World Application
Cores of inductors and transformers constructed of thin layers: It's to reduce power loss from eddy currents in the core. Eddy currents in solid cores cause losses; laminating the core breaks up these currents. This is the reason - reduce eddy current losses.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Simplify assembly during manufacturing isn't the reason - thin layers reduce eddy current losses. Manufacturing simplicity isn't the reason.
Option C: Incorrect. Increase cutoff frequency by reducing capacitance isn't the reason - thin layers reduce eddy current losses. Cutoff frequency isn't the reason.
Option D: Incorrect. Save cost by reducing magnetic material isn't the reason - thin layers reduce eddy current losses. Cost saving isn't the reason.
题目解析
The correct answer is B: To reduce power loss from eddy currents in the core. Why are cores of inductors and transformers sometimes constructed of thin layers is to reduce power loss from eddy currents in the core. Laminated cores reduce eddy current losses. For amateur radio operators, this is important for component knowledge. Understanding this helps when working with inductors and transformers.
考试技巧
Thin layer cores = reduce power loss from eddy currents. Think 'T'hin 'L'ayers = 'T'rap 'L'ess eddy currents. Laminated cores reduce eddy current losses. Not manufacturing simplicity, not cutoff frequency, not cost saving - just reduce eddy current losses.
记忆口诀
Thin layer cores = reduce power loss from eddy currents. Think 'T'hin 'L'ayers = 'E'ddy current reduction. Laminated cores reduce eddy current losses. Important for component knowledge.
实际应用示例
Cores of inductors and transformers constructed of thin layers: It's to reduce power loss from eddy currents in the core. Eddy currents in solid cores cause losses; laminating the core breaks up these currents. This is the reason - reduce eddy current losses.
错误选项分析
Option A: Incorrect. Simplify assembly during manufacturing isn't the reason - thin layers reduce eddy current losses. Manufacturing simplicity isn't the reason. Option C: Incorrect. Increase cutoff frequency by reducing capacitance isn't the reason - thin layers reduce eddy current losses. Cutoff frequency isn't the reason. Option D: Incorrect. Save cost by reducing magnetic material isn't the reason - thin layers reduce eddy current losses. Cost saving isn't the reason.
知识点
Cores of inductors and transformers, Constructed of thin layers, Reduce power loss, Eddy currents in core
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.