Practice question

Which test instrument is most appropriate for measuring the AC line voltage at the cabinet service entrance?

  1. True-RMS digital multimeter (DVM/DMM) rated for at least CAT III 600 V
  2. An LCR meter with no AC voltage range
  3. A loop-detector tester
  4. An infrared thermometer

Answer: A — True-RMS digital multimeter (DVM/DMM) rated for at least CAT III 600 V

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

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