What must be the luminous intensity, in candela, of a spot light mounted on a ceiling of a 3-meter floor-to-ceiling high chapel if the illuminance level required is 1200 lux? The angle of inclination of the lamp is 30 degrees and lighting an altar table that is 900mm from the floor.
What must be the luminous intensity, in candela, of a spot light mounted on a ceiling of a 3-meter floor-to-ceiling high chapel if the illuminance level required is 1200 lux? The angle of inclination of the lamp is 30 degrees and lighting an altar table that is 900mm from the floor.
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter9: Measuring Instruments
Section: Chapter Questions
Problem 10RQ: 10. What electrical quantity does the oscilloscope measure?
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What must be the luminous intensity, in candela, of a spot light mounted on a ceiling of a 3-meter floor-to-ceiling high chapel if the illuminance level required is 1200 lux? The angle of inclination of the lamp is 30 degrees and lighting an altar table that is 900mm from the floor.
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