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A lux meter is used in an audit to establish

  • A.the colour temperature of the lamps installed
  • B.the efficiency of the lamp's ballast
  • C.whether the illumination matches the task requirement
  • D.the power consumed by each luminaire

Answer: C

Areas lit to three times the recommended level are common and represent energy spent for nothing, and the meter is what turns an impression into a number that can be compared with the standard. Lamp power and ballast loss need an electrical measurement.

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