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سؤال 565

What impedance does a 1/4-wavelength transmission line present to an RF generator when the line is open at the far end?

  1. The same as the characteristic impedance of the line
  2. The same as the input impedance to the generator
  3. Very high impedance
  4. Very low impedanceپاسخ درست

توضیح

A quarter-wave section inverts its termination, so an open circuit at the far end appears as a short circuit at the input. The generator therefore sees an impedance close to zero, the section behaving like a series-resonant circuit.

ادامهٔ این آزمون

شروع تمرین
سؤال 565: What impedance does a 1/4-wavelength transmission line… · FCC Amateur Extra Class (Element 4) · Questena