Heat TransferHard
Question
One end of a thermally insulated rod is kept at a temperature T1 and the other at T2. The rod is composed of two sections of lengths l1 and l2 and thermal conductivities k1 and k2 respectively. The temperature at the interface of the two sections is
Options
A.(k2l2T1 + k1l1T2)/(k1l1 + k2l2)
B.(k2l1T1 + k1l1T2)/(k2l1 + k1l2)
C.(k1l2T1 + k1l1T2)/(k1l2 + k2l1)
D.(k1l1T1 + k2l2T2)/(k1l1 + k2l2)
More Heat Transfer Questions
A perfectly black body is one where :...A piece of steel is heated upto 100oC and is allowed to cool in a room then which graph is correct ?...The temperature of a perfect black body is 727oC and its area is 0.1 m2. If stefan′s constant is 5.67 × 10-8 ...If the rates of loss of energy by unit area of an iron ball are E1 E2 and E3 when it cools from 75oC to 70oC, 70oC to 65...Calculate the energy radiated per minute from the filament of an incandascent lamp at 2000K if the surface area is 5 ...