Please answer the question below with solution.?
The shunt winding of a motor has a resistance of 85 Ω at 22ºC. When the motor runs at full load, its resistance increases to 100 Ω. The resistance temperature coefficient of winding per ºC is 0.004. The rise in temperature of the winding will be? Temperature Change in Resistance Rt = Ro(1 + α∆T) α is temperature coef in /ºC Rt = Ro(1 + α∆T) 100 = 85(1 + 0.004∆T) 1 + 0.004∆T = 1.176 0.004∆T = 0.176 ∆T = 44.1º T = 44+22 = 66º