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السؤال 290

Which of the following causes failure of coaxial cables?

  1. Moisture contaminationالإجابة الصحيحة
  2. Solder flux contamination
  3. Rapid fluctuation in transmitter output power
  4. Operation at 100% duty cycle for an extended period

الشرح

Water entering coaxial cable through cracked jackets, unsealed connectors or a damaged end wicks along the braid and dielectric, raising loss and corroding the conductors, and it is the classic cause of cable failure. Rosin flux is non-corrosive, and coax is not damaged by normal duty cycle or power variation within its ratings.

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السؤال 290: Which of the following causes failure of coaxial cables? · FCC Technician Class (Element 2) · Questena