6. The filament of a 240 V metal filament lamp is to be connected from a wire having a diameter of 0.02 mm and a resistivity at 20 C of 4.3 micro ohms - cm and temperature coefficient at 20•C is 0.005/ °C, what length of filament is necessary if the lamp is to dissipate 60 watts at a filament tempearture of 2420•C

6. The filament of a 240 V metal filament lamp is to be connected from a wire having a diameter of 0.02 mm and a resistivity at 20 C of 4.3 micro ohms - cm and temperature coefficient at 20•C is 0.005/ °C, what length of filament is necessary if the lamp is to dissipate 60 watts at a filament tempearture of 2420•C

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems

Section: Chapter Questions

Problem 2RQ

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