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Practice quizzes / IMSA Traffic Signal I Practice Questions - IMSA Traffic Signal Technician Level I Certification Exam Exam / Question 102846
Practice question

What is the standard nominal voltage for traffic signal circuits in the United States?

  1. 12 volts DC
  2. 24 volts DC
  3. 120 volts AC
  4. 240 volts AC

Answer: C — 120 volts AC

The correct answer is shown above. Try the full quiz for additional practice.

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