A 2.2-mm-diameter and 10-m-long electric wire is tightly wrapped with a 1-mm-thick plastiC cover whose thermal conductivity is k = 0.15 W/m K.Electrical measurements indicate that a current of 13 A passes through the wire and there is a voltage drop of 8 V along the wire. Assume that theinsulated wire is exposed to a medium at T = 48°C with a heat transfer coefficient of h = 24 W/m KElectricalwireInsulationThe heat generated isv in WattsThe total thermal resistance isv in C/WThe temperature at the interface of the wire and the plastic cover isv in Co

Given:d=2.2 mmL=10 mt=1 mmk=0.15 W/m.Ki=13 AV=8 VT∞=48°Ch=24 W/m2.K

A 2.2-mm-diameter and 10-m-long electric wire is tightly wrapped with a 1-mm-thick plastic cover whose thermal conductivity is k = 0.15 Wim Electrical measurements indicate that a current of 13 A passes through the wire and there is a voltage drop of 8 V along the wire. Assume tha insulated wire is exposed to a medium at T = 48°C with a heat transfer coefficient of h 24 W/m K. Electrical wire Insulation The heat generated is v in Watts The total thermal resistance is v in C/W The temperature at the interface of the wire and the plastic cover is v in Co

A 2.2-mm-diameter and 10-m-long electric wire is tightly wrapped with a 1-mm-thick plastic cover whose thermal conductivity is k = 0.15 Wim Electrical measurements indicate that a current of 13 A passes through the wire and there is a voltage drop of 8 V along the wire. Assume tha insulated wire is exposed to a medium at T = 48°C with a heat transfer coefficient of h 24 W/m K. Electrical wire Insulation The heat generated is v in Watts The total thermal resistance is v in C/W The temperature at the interface of the wire and the plastic cover is v in Co

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A 2.2-mm-diameter and 10-m-long electric wire is tightly wrapped with a 1-mm-thick plastiC cover whose thermal conductivity is k = 0.15 W/m K.
Electrical measurements indicate that a current of 13 A passes through the wire and there is a voltage drop of 8 V along the wire. Assume that the
insulated wire is exposed to a medium at T = 48°C with a heat transfer coefficient of h = 24 W/m K
Electrical
wire
Insulation
The heat generated is
v in Watts
The total thermal resistance is
v in C/W
The temperature at the interface of the wire and the plastic cover is
v in Co

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