L.2. The most energy-efficient light source of the HID family is the A. fluorescent lamp. B. metal halide lamp. C. mercury lamp. D. high-pressure sodium lamp.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems
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L.2. The most energy-efficient light source of the HID family is the
A. fluorescent lamp.
B. metal halide lamp.
C. mercury lamp.
D. high-pressure sodium lamp.
L.3. 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

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