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Network TheoryNetwork Synthesis

For a pure reactance one-port made only of ideal L and C elements, the real part of its impedance on the j-omega axis away from poles is?

  • APositive and frequency dependent
  • BNegative and frequency dependent
  • CZero
  • DAlways equal to 1 ohm
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Correct Answer: C. Zero
Explanation: An ideal lossless LC network absorbs zero average power, so its impedance is purely imaginary away from singularities.
Reference: Standard network theory: reactance function
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