If a D.C. motor designed for 40 C ambient temperature is to be used for 50 C ambient temperature, then the motor_____________?

Of lower H.P. should be selected

Of higher H.P. should be selected

Can be used for 50 C ambient temperature also

Is to be derated by a factor recommended by manufacturer and select the next higher H.P. motor

If a D.C. motor designed for 40 C ambient temperature is to be used fo

1.	If a D.C. motor designed for 40 C ambient temperature is to be used for 50 C ambient temperature, then the motor_____________?
A.	Of lower H.P. should be selected
B.	Of higher H.P. should be selected
C.	Can be used for 50 C ambient temperature also
D.	Is to be derated by a factor recommended by manufacturer and select the next higher H.P. motor
Answer» E.