Practice question

What is the purpose of a UPS (Uninterruptible Power Supply) system at a traffic signal installation?

  1. To increase the voltage output to signal heads
  2. Temporary backup power
  3. To permanently replace utility power at remote locations
  4. To regulate the frequency of AC power

Answer: B — Temporary backup power

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Practice more: IMSA Traffic Signal II Practice Questions - IMSA Traffic Signal Field Technician Level II Certification Exam Exam →