Chemical Engineering > GATE 2025 > Heat Conduction
An electrical wire of 2 mm diameter and 5 m length is insulated with a plastic layer of thickness 2 mm and thermal conductivity k=0.1 W/(m K). It is exposed to ambient air at 30°C. For a current of 5 A, the potential drop across the wire is 2 V. The air-side heat transfer coefficient is 20 W/(m2K). Neglecting the thermal resistance of the wire, the steady state temperature at the wire-insulation interface is ______ °C (rounded off to 1 decimal place).
Correct : 49.8
Similar Questions
Consider a solid block of unit thickness for which the thermal conductivity decreases with an increase in temperature. The opposite faces of the block are maint...
The wall of a pipe of radius 1 m is at a uniform temperature of 200 °C, and is covered by insulation of thickness 0.1 m.
The ambient air outside the insula...
A hot plate is placed in contact with a cold plate of a different thermal conductivity as shown in the figure. The initial temperature (at time t=0) of the hot...
Total Unique Visitors
Loading......