Question

please give full solution. Is it A) around 75 degree celcius or B) around 893 degree celcius

The field winding of dc motor connected across 230v supply takes 1.15A at room temperature of 20 degree celsius. After working for some time the current falls to 0.26A , the voltage supply remaining constant. Calculate the final working temp of field winding. [Temperature coefficient of copper at 20 degree celsius is 1/254.5

Answer 1

Answer:

answer is in the photo..........

Answer 2

Answer:

nice answer given.............