DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. None of the listed here Cu losses Iron and friction losses Field losses None of the listed here Cu losses Iron and friction losses Field losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens Nothing will happen to the motor This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses This will make armature to take heavy current, possibly burning it Motor will run at very slow speed Nothing will happen to the motor This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses This will make armature to take heavy current, possibly burning it Motor will run at very slow speed 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 25% of the previous value 50% of the previous value 100% of the previous value 10% of the previous value 25% of the previous value 50% of the previous value 100% of the previous value 10% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors The greatest percentage of power loss in a dc motor is due to Friction loss Copper loss Windage loss Core loss Friction loss Copper loss Windage loss Core loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors The direction of rotation of a D.C. series motor can be changed by Interchanging supply terminals Either of (A) and (B) above None of these Interchanging field terminals Interchanging supply terminals Either of (A) and (B) above None of these Interchanging field terminals ANSWER DOWNLOAD EXAMIANS APP
DC Motors Differentially compound D.C. motors can find applications requiring Frequent on-off cycles High starting torque Variable speed Low starting torque Frequent on-off cycles High starting torque Variable speed Low starting torque ANSWER DOWNLOAD EXAMIANS APP
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