What is susceptance?
The correct answer is C: The imaginary part of admittance. What is susceptance is the imaginary part of admittance. Susceptance is the imaginary component of admittance (Y = G + jB). For amateur radio operators, this is important for circuit theory. Understanding this helps when working with admittance.
Exam Tip
Susceptance = imaginary part of admittance. Think 'S'usceptance = 'I'maginary part of 'A'dmittance. Susceptance is the imaginary component of admittance (Y = G + jB). Not magnetic impedance, not field ratio, not transformer efficiency - just imaginary part of admittance.
Memory Aid
"Susceptance = imaginary part of admittance. Think 'S'usceptance = 'I'maginary part. Susceptance is the imaginary component of admittance (Y = G + jB). Important for circuit theory."
Real-World Application
Susceptance: It's the imaginary part of admittance. Admittance Y = G + jB, where G is conductance (real part) and B is susceptance (imaginary part). This is what susceptance is - the imaginary part of admittance.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Magnetic impedance of circuit isn't susceptance - susceptance is imaginary part of admittance. Magnetic impedance isn't susceptance.
Option B: Incorrect. Ratio of magnetic field to electric field isn't susceptance - susceptance is imaginary part of admittance. Field ratio isn't susceptance.
Option D: Incorrect. Measure of transformer efficiency isn't susceptance - susceptance is imaginary part of admittance. Transformer efficiency isn't susceptance.
题目解析
The correct answer is C: The imaginary part of admittance. What is susceptance is the imaginary part of admittance. Susceptance is the imaginary component of admittance (Y = G + jB). For amateur radio operators, this is important for circuit theory. Understanding this helps when working with admittance.
考试技巧
Susceptance = imaginary part of admittance. Think 'S'usceptance = 'I'maginary part of 'A'dmittance. Susceptance is the imaginary component of admittance (Y = G + jB). Not magnetic impedance, not field ratio, not transformer efficiency - just imaginary part of admittance.
记忆口诀
Susceptance = imaginary part of admittance. Think 'S'usceptance = 'I'maginary part. Susceptance is the imaginary component of admittance (Y = G + jB). Important for circuit theory.
实际应用示例
Susceptance: It's the imaginary part of admittance. Admittance Y = G + jB, where G is conductance (real part) and B is susceptance (imaginary part). This is what susceptance is - the imaginary part of admittance.
错误选项分析
Option A: Incorrect. Magnetic impedance of circuit isn't susceptance - susceptance is imaginary part of admittance. Magnetic impedance isn't susceptance. Option B: Incorrect. Ratio of magnetic field to electric field isn't susceptance - susceptance is imaginary part of admittance. Field ratio isn't susceptance. Option D: Incorrect. Measure of transformer efficiency isn't susceptance - susceptance is imaginary part of admittance. Transformer efficiency isn't susceptance.
知识点
Susceptance, Imaginary part of admittance, Admittance components, Circuit theory
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.