Fluorescent Lamps

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1. When is the lumen output for a fluorescent lamp determined for calculating illumination levels?

AT THE END OF THE MAINTENANCE PERIOD

  • Rated average life is the point in time when 40% of a tested sample have failed and 60% are still operational.

       True      x    False  

  • Rated average life for all fluorescent lamps is based upon 3 burning hours per start.
  • Name three factors affecting lamp life.
    ....BURNING HOURS PER START OVERVOLTAGE ....UNDERVOLTAGE

  • Fluorescent lamps have colour appearance which is .. .. NEUTRAL.... or cool, when compared to an incandescent lamp.

  • Ambient temperatures below 5 degrees Celsius do not affect starting or light output.

       True      x    False  


  • Quote rated lamp life for the following:
    Polylux XL 15,000 HOURS
    White        9,000 HOURS

  • List four advantages of fluorescent lamps.
    HIGH EFFICACY    WIDE RANGE OF WATTAGES
    LOW POWER CONSUMPTION    LOW SURFACE BRIGHTNESS
    LONG LIFE   QUICK STARTING  WIDE SELECTION OF COLOURS DIMMABLE     
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