Numerical no. 1|| Machine Design || Stack of laminations || Calculate temperature difference

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Q. The thermal resistivity of a stack of laminations measured along the laminations in 0.02 Ωm. The iron loss is 40kW/m³. Calculate the value of temperature difference between the hot spot and the outside surface for the following cases:-
i) length of stack measured along the laminations = 0.2m
length of stack measured across the laminations = 0.1m
il) length of stack measured along the laminations = 1m
length of stack measured across the laminations = 0.1m.
The thermal resistivity across the laminations it 40 times that along the laminations.
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