Electrical Engineering · Illumination Engineering
Halogen incandescent lamps are significantly less energy-efficient than modern LED lamps primarily because ________.
- 1they convert most electrical energy into ultraviolet radiation
- 2they operate at very low filament temperatures
- 3they waste a large proportion of electrical energy as infrared heat emission✓
- 4they produce monochromatic light in a narrow spectrum
Correct answer
they waste a large proportion of electrical energy as infrared heat emission
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