Q2. A meeting hall in an organization is to be provided with a lighting installation. The hall is 30 m × 20 m × 8 m (high). The mounting height is 5 m and the required level of illumination is 144 Im/m². Design a lighting system for the hall with the given data. Lumens/watt for 200-W lamp = 12 and Lumens/ watt for 500-W lamp = 16. Utilization coefficient = 0.6 Maintenance factor = 0.75 space/height ratio=1 Using metal filament lamps, estimate the following: 1. Flux 2. Luman output per 200 W lamp 3. Luman output per 500 W lamp
Q2. A meeting hall in an organization is to be provided with a lighting installation. The hall is 30 m × 20 m × 8 m (high). The mounting height is 5 m and the required level of illumination is 144 Im/m². Design a lighting system for the hall with the given data. Lumens/watt for 200-W lamp = 12 and Lumens/ watt for 500-W lamp = 16. Utilization coefficient = 0.6 Maintenance factor = 0.75 space/height ratio=1 Using metal filament lamps, estimate the following: 1. Flux 2. Luman output per 200 W lamp 3. Luman output per 500 W lamp
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Transcribed Image Text:Q2. A meeting hall in an organization is to be provided with a lighting
installation. The hall is 30 m × 20 m × 8 m (high). The mounting height is 5 m
and the required level of illumination is 144 Im/m?. Design a lighting system for
the hall with the given data.
Lumens/watt for 200-W lamp = 12 and
Lumens/ watt for 500-W lamp = 16.
Utilization coefficient = 0.6
Maintenance factor = 0.75
space/height ratio=1
Using metal filament lamps, estimate the following:
1. Flux
2. Luman output per 200 W lamp
3. Luman output per 500 W lamp
4. Number of 500W lamps required
5. Number of 220W lamps required
6. Draw the spacing layout of these lamps
7. State the reason if any of these 2 lamps cannot be arranged in the hall with
the given specification.
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