The resistance of a 25Ω resistor increases by 10 percent when its operating temperature increases from 15◦C to 50◦C. Calculate: (a) the resistance and the temperature coefficient at 0◦C. (b) the mean temperature rise of the resistor from an ambient temperature of 20◦C when its resistance is 30Ω. (use 7 decimal places for the answer in temperature coefficient in letter (a))

The resistance of a 25Ω resistor increases by 10 percent when its operating temperature increases from 15◦C to 50◦C. Calculate: (a) the resistance and the temperature coefficient at 0◦C. (b) the mean temperature rise of the resistor from an ambient temperature of 20◦C when its resistance is 30Ω. (use 7 decimal places for the answer in temperature coefficient in letter (a))

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

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter13: Heating Control Devices

Section: Chapter Questions

Problem 28RQ

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