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Posted: **Fri Jul 08, 2022 6:24 am**

: 17 A 30 X 40 Ft Room Is To Be Illuminated With Incandescent Lamps Having A Total Output Of 27 500 Lm If The Light Loss 1 (52.14 KiB) Viewed 33 times

17. A 30 x 40 ft room is to be illuminated with incandescent lamps having a total output of 27,500 lm. If the light-loss factor is 0.80 and the coefficient of utilization is 0.6, the illumination is A. 11.0 fc. B. 13.7 fc. C. 18.3 fc. D. 22.9 fc.