If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor________?
Acan be used for 50°C ambient temperature also
Bof higher H.P. should be selected
Cof lower H.P. should be selected
Dis to be derated by a factor recommended by manufacturer and select the next higher H.P. motor
Correct answer
D. is to be derated by a factor recommended by manufacturer and select the next higher H.P. motor
Explanation
The correct answer is is to be derated by a factor recommended by manufacturer and select the next higher H.P. motor.