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Pregunta 242

What transformer turns ratio matches an antenna’s 600-ohm feed point impedance to a 50-ohm coaxial cable?

  1. 3.5 to 1Respuesta correcta
  2. 12 to 1
  3. 24 to 1
  4. 144 to 1

Explicación

Impedance transforms as the square of the turns ratio, so the turns ratio is √(600 / 50) = √(12) = 3.46, which rounds to 3.5 to 1. The 12 to 1 distractor is the impedance ratio itself, before taking the square root.

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Pregunta 242: What transformer turns ratio matches an antenna’s 600-ohm… · FCC General Class (Element 3) · Questena