-
A 10 mm diameter electrical conductor is covered by an insulation of 2 mm thickness. The conductivity of the insulation is 0.08 W/mK and the convection coefficient at the insulation surface is 10 W/m²K. Addition of further insulation of the same material will
-
- increase heat loss continuously
- decrease heat loss continuously
- increase heat loss to a maximum and then decrease heat loss
- decrease heat loss to a minimum and then increase heat loss
Correct Option: C
rc = 8mm
∴ the heat lost increases to maximum and then decreases.
