DC Motors The speed of a dc motor is 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 inversely proportional to flux per pole inversely proportional to applied voltage None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors For starting a dc motor a starter is required because It limits the speed of the motor It limits the starting current to a safe value None of the listed here It starts the motor It limits the speed of the motor It limits the starting current to a safe value None of the listed here It starts the motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Three point starter can be used for Both shunt and compound motor Shunt motor only Series motor only Compound motor only Both shunt and compound motor Shunt motor only Series motor only Compound motor only ANSWER DOWNLOAD EXAMIANS APP
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 10% of the previous value 50% of the previous value 100% of the previous value 25% of the previous value 10% of the previous value 50% of the previous value 100% of the previous value 25% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. Iron and friction losses Cu losses None of the listed here Field losses Iron and friction losses Cu losses None of the listed here Field losses 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 Of higher H.P. should be selected Can be used for 50°C ambient temperature also Is to be de-rated by a factor recommended by manufacturer and select the next higher H.P. 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 de-rated by a factor recommended by manufacturer and select the next higher H.P. motor Of lower H.P. should be selected ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS