A front of a building 50 m by 16 m is to be illuminated by sixteen 1000-W lamps arranged so that uniform illumination is obtained at the surface. Assuming a luminous efficiency of 18 lumens/watt, CU = 0.50 and MF = 0.90, what is the illumination on the surface?

A front of a building 50 m by 16 m is to be illuminated by sixteen 1000-W lamps arranged so that uniform illumination is obtained at the surface. Assuming a luminous efficiency of 18 lumens/watt, CU = 0.50 and MF = 0.90, what is the illumination on the surface?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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A front of a building 50 m by 16 m is to be illuminated by sixteen 1000-W
lamps arranged so that uniform illumination is obtained at the surface.
Assuming a luminous efficiency of 18 lumens/watt, CU = 0.50 and MF =
0.90, what is the illumination on the surface?

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