Practice question

Which condition would normally cause a CMU to flag a CVM (Controller Voltage Monitor) fault?

  1. Controller output disabled, controller power lost, or controller power supply out of range
  2. A pedestrian pushbutton stuck
  3. A loop detector amplifier in test mode
  4. A non-coordinated phase served on demand

Answer: A — Controller output disabled, controller power lost, or controller power supply out of range

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