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A relighting scheme is proposed on energy grounds alone in a printing inspection area. The point to check first is

  • A.the mounting height available in the room
  • B.the colour rendering of the proposed lamps
  • C.the colour temperature of the existing lamps
  • D.the power factor of the proposed drivers

Answer: B

Colour judgement is the whole purpose of such an area, and a high-efficacy lamp with poor rendering would make it unusable whatever it saved. The task requirement constrains the choice before any energy comparison is made.

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