8. A light bulb, having a tungsten-filament, draws 2.85 A at 220 V when running at normal condition. The cold resistance of the filament is 18 N at 25 °C. The temperature coefficient of resistance is 0.00355 ºC at 17 °C. Determine the temperature rise of the bulb when running at normal condition.

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter3: Power Transformers
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8. A light bulb, having a tungsten-filament, draws 2.85 A at 220 V when running at normal condition. The cold
resistance of the filament is 18 N at 25 °C. The temperature coefficient of resistance is 0.00355 /ºC at 17 °C.
Determine the temperature rise of the bulb when running at normal condition.
gulor bus bar made of aluminu L1ain
bar
Transcribed Image Text:8. A light bulb, having a tungsten-filament, draws 2.85 A at 220 V when running at normal condition. The cold resistance of the filament is 18 N at 25 °C. The temperature coefficient of resistance is 0.00355 /ºC at 17 °C. Determine the temperature rise of the bulb when running at normal condition. gulor bus bar made of aluminu L1ain bar
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