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 f

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.