Multiple choice

A 10 mm diameter electrical conductor is covered by an insulation of 2 mm thickness. The conductivity of the insulation is 0.08 W/m-K and the convection coefficient at the insulation surface is 10 W/m2-K. Addition of further insulation of the same material will

  1. increase heat loss continuously

  2. decrease heat loss continuously

  3. increase heat loss to a maximum and then decrease heat loss

  4. decrease heat loss to a minimum and then increase

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation