M.a. Which of the following provisions are used to compare ballast quality? A. Bulb size, case material, coil size B. Crest factor, power factor, total harmonic distortion C. Crest factor, filament length, total harmonic distortion D. Bulb size, power factor, case material Mb.The average life of a four-foot-long
M.a. Which of the following provisions are used to compare ballast quality? A. Bulb size, case material, coil size B. Crest factor, power factor, total harmonic distortion C. Crest factor, filament length, total harmonic distortion D. Bulb size, power factor, case material Mb.The average life of a four-foot-long
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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M.a. Which of the following provisions are used to compare ballast quality?
A. Bulb size, case material, coil size
B. Crest factor, power factor, total harmonic distortion
C. Crest factor, filament length, total harmonic distortion
D. Bulb size, power factor, case material
Mb.The average life of a four-foot-long. 32-watt T8 fluorescent lamp is
a- 20,000 hours, b- 50,000 hours, c- 100,000 hours , d- 5000 hours.
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