International Library of Technology · Scranton, International Textbook Co. · leaf 201
hows a typical incan-descent lamp with which everyone isfamiliar. In order that the lighting servicesupplied from an incandescent plantshall be satisfactory, it is highly impor-tant to see that the lamps are effi-cient. If poor lamps are used, or ifthe lamps are burned beyond their use-ful life,… … FlG. 1. 4 ELECTRIC LIGHTING. § 16 service with old or cheap lamps that soon run down incandlepower. Central-station managers are coming to real-ize this point more than was once the case and are devotingmore attention to the quality of the lamps that they buy;in fact, most progressive companies now…
Electrical engineering
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