/ A coil resistance is wound with 45m of 0.12mm diameter wire resistivity 12×10° Q.m. Calculate the length and diameter of a new resistance wire of resistivity 49×10°2.m. to replace the originals. Assume the same conditions of emissivity and cooling.

/ A coil resistance is wound with 45m of 0.12mm diameter wire resistivity 12×10° Q.m. Calculate the length and diameter of a new resistance wire of resistivity 49×10°2.m. to replace the originals. Assume the same conditions of emissivity and cooling.

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

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.2P: The temperature dependence of resistance is also quantified by the relation R2=R1[ 1+(T2T1) ] where...

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

Question

/ A coil resistance is wound with 45m of 0.12mm diameter wire
resistivity 12×10° 2.m. Calculate the length and diameter of a new
resistance wire of resistivity 49×10°2.m. to replace the originals. Assume
the same conditions of emissivity and cooling.

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