Practice question

How does 0-10V dimming control the light output of an LED luminaire?

  1. By changing the color temperature
  2. By varying a DC control voltage between 0V (minimum/off) and 10V (full brightness) on a separate control wire pair
  3. By switching the luminaire on and off rapidly
  4. By adjusting the frequency of the AC power

Answer: B — By varying a DC control voltage between 0V (minimum/off) and 10V (full brightness) on a separate control wire pair

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