DC Motors In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to 50% of the previous value 10% of the previous value 25% of the previous value 100% of the previous value 50% of the previous value 10% of the previous value 25% of the previous value 100% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor Can be used for 50°C ambient temperature also Of lower H.P. should be selected Of higher H.P. should be selected Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. motor Can be used for 50°C ambient temperature also Of lower H.P. should be selected Of higher H.P. should be selected Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is inversely proportional to flux per pole inversely proportional to applied voltage None of the listed here Directly proportional to flux per pole inversely proportional to flux per pole inversely proportional to applied voltage None of the listed here Directly proportional to flux per pole ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating winding is basically used in a dc machine To improve commutation None of the listed here To control the speed of machine To reduce armature reaction To improve commutation None of the listed here To control the speed of machine To reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Motors The friction and windage losses in a dc motor depends upon Field and armature resistance Flux Speed Armature current Field and armature resistance Flux Speed Armature current ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating pole winding is connected in Series with the armature None of the listed here Series-parallel with the armature Parallel with the armature Series with the armature None of the listed here Series-parallel with the armature Parallel with the armature ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS