engineering recuitment MP Vyapam Sub Engineer Mock Test 2024 Heat Transfer Conduction Critical Thickness of Insulation
A cylinder with conductivity 40 W/mK insulated with the material of conductivity 0.1 W/mK. If h = 5 W/m2K, the critical radius of insulation is
1
20 mm
2
40 mm
3
10 mm
4
15 mm