Question

What is the luminous efficiency of the following fluorescent light fixture? FT54T5 HO 48' single lamp suspended light fixture 54W 12,000 hrs rated life 5,000lm output Ballast Factor of 0.96 Select one: O a. 96 Im/W O b. 54 lm/W O c. 89 Im/W O d. None of these O e. 93 lm/W

Answer 1

• Luminous efficieney? Laminan flux xBalasf factor power 50ooley Lumiou efficiency -xo.96 540 Lumious = efficiency 88.88 Iwiw Lemious efficiency = 89 QuelW options 89 lm/W.