An electric wire having a diameter of 1.5 mm and covered with a plastic insulation (thickness = 2.5 mm) is exposed to air at 300 K and ho=20 W/m2.K. The insulation has a thermal conductivity (k) of 0.4 W/m.K.Assuming the wire surface temperature is constant at 400 K and is not affected by the coveringa)Calculate the value of the critical radius.b)Calculate the heat loss per meter of wire length with no insulation.c)Calculate the heat loss per meter of wire length with insulation. An electric wire having a diameter of 1.5 mm and covered with a plastic insulation (thickness =2.5 mm) is exposed to air at 300 K and h. = 20 W/m².K. The insulation has a thermal conductivity(k) of 0.4 W/m.K.Assuming the wire surface temperature is constant at 400 K and is not affected by the coveringa) Calculate the value of the critical radius.b) Calculate the heat loss per meter of wire length with no insulation.c) Calculate the heat loss per meter of wire length with insulation.

In this problem, we will calculate the critical radius, heat loss without insulation, and heat loss…

Answered: An electric wire having a diameter of…

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

See similar textbooks

Related questions

Concept explainers

Question

An electric wire having a diameter of 1.5 mm and covered with a plastic insulation (thickness = 2.5 mm) is exposed to air at 300 K and ho=20 W/m2.K. The insulation has a thermal conductivity (k) of 0.4 W/m.K.

Assuming the wire surface temperature is constant at 400 K and is not affected by the covering

a)Calculate the value of the critical radius.

b)Calculate the heat loss per meter of wire length with no insulation.

c)Calculate the heat loss per meter of wire length with insulation.

An electric wire having a diameter of 1.5 mm and covered with a plastic insulation (thickness =
2.5 mm) is exposed to air at 300 K and h. = 20 W/m².K. The insulation has a thermal conductivity
(k) of 0.4 W/m.K.
Assuming the wire surface temperature is constant at 400 K and is not affected by the covering
a) Calculate the value of the critical radius.
b) Calculate the heat loss per meter of wire length with no insulation.
c) Calculate the heat loss per meter of wire length with insulation.

Expert Solution

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions