piece of resistance wire , 15.6m long and the cross sectional area 12mm sq. at a temperature of 0 degrees , passes a curent of 7.9 A when connected to DC supply at 240V. Calculate a.) resistivity of the wire b). the current which will flow when the temperature rises to 55 degrees celcius. The temperature coefficient of the resistance wire at 0degrees is 0.00029
piece of resistance wire , 15.6m long and the cross sectional area 12mm sq. at a temperature of 0 degrees , passes a curent of 7.9 A when connected to DC supply at 240V. Calculate a.) resistivity of the wire b). the current which will flow when the temperature rises to 55 degrees celcius. The temperature coefficient of the resistance wire at 0degrees is 0.00029
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter12: Electronic Control Devices
Section: Chapter Questions
Problem 14RQ
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A piece of resistance wire , 15.6m long and the cross sectional area 12mm sq. at a temperature of 0 degrees , passes a curent of 7.9 A when connected to DC supply at 240V. Calculate
a.) resistivity of the wire
b). the current which will flow when the temperature rises to 55 degrees celcius.
The temperature coefficient of the resistance wire at 0degrees is 0.00029.
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