【Electrical Version】Daily Question 20180303

2018-03-06View Original

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The optical properties of lighting fixtures are primarily described using the following (　　) technical data. 　　a. Lifespan of the lamp b. Color rendering index c. Light distribution curve of the lamp d. Light shielding angle of the lamp e. Efficiency of the lamp Correct answer: cde

Reply #22018-03-06

The optical properties of lighting fixtures are mainly described using the following (CDE) technical data. 　　a. Lifespan of the light fixture b. Color rendering index c. Light distribution curve of the light fixture d. Light shielding angle of the light fixture e. Efficiency of the light fixture

Reply #32018-03-06

c. Luminous distribution curve of the lamp d. Light shielding angle of the lamp e. Lamp efficiency

Reply #42018-03-06

c. Luminous distribution curve of the lamp d. Light shielding angle of the lamp e. Lamp efficiency

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【Electrical Version】Daily Question 20180303

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