Determine the luminous efficacy of the following lamps: a. A 75 W incandescent lamp that emits 1170
Question:
Determine the luminous efficacy of the following lamps:
a. A 75 W incandescent lamp that emits 1170 lm
b. A 40 W linear fluorescent lamp that consumes 44W, including the ballast and emits 3400 lm
c. A 175 W metal halide lamp that consumes 205 W, including the ballast and emits 16 600 lm
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Luminous efficacy is a measure of how efficiently a light source produces visible light ...View the full answer
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Related Book For 
Mechanical And Electrical Systems In Architecture Engineering And Construction
ISBN: 9780135000045
5th Edition
Authors: Frank R Dagostino, Joseph B Wujek
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