- Heat Transfer - Section 1
- Heat Transfer - Section 2
- Heat Transfer - Section 3
- Heat Transfer - Section 4
- Heat Transfer - Section 5
- Heat Transfer - Section 6
- Heat Transfer - Section 7
- Heat Transfer - Section 8
- Heat Transfer - Section 9
- Heat Transfer - Section 10
- Heat Transfer - Section 11


Heat Transfer - Engineering
Q1: The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)A K/h0
B 2K/h0
C h0/K
D h0/2K
ANS:B - 2K/h0 The critical radius of insulation for a spherical shell represents the point at which the heat transfer rate through the insulation becomes minimized. It occurs when the heat transfer by conduction through the insulation is equal to the heat transfer by convection from the outer surface of the insulation. The critical radius, critrcrit, for a spherical shell insulation can be calculated using the formula: crit=ℎ0rcrit=h0K Where:
|


For help Students Orientation
Mcqs Questions
One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.