engineering recuitment HPCL Engineer Mock Test 2024 Heat Transfer Conduction Heat Conduction Through Plane and Composite Walls
The dimensions of a wall are 5 m long, 10 m wide & 0.25 m thick, made of material having thermal conductivity at 1 W/mK. The temperature of inner and outside wall are 25 ºC and 15 ºC respectively for 10 hrs. If cost of electricity is 10 rupees per kWh, the cost of heat loss will be in rupees
1
20
2
200
3
10
4
100