DC Motors Ward-Leonard control is basically a Voltage control method Armature resistance control method Field control method Field divertor method Voltage control method Armature resistance control method Field control method Field divertor method ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. generator, the iron losses mainly take place in Armature conductors Commutator Armature rotor Yoke Armature conductors Commutator Armature rotor Yoke ANSWER DOWNLOAD EXAMIANS APP
DC Motors The greatest percentage of power loss in a dc motor is due to Copper loss Friction loss Windage loss Core loss Copper loss Friction loss Windage loss Core loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit Armature is temporarily open circuited A high value resistor is connected across the field winding A resistance is connected parallel to the armature A resistance is connected in series with armature Armature is temporarily open circuited A high value resistor is connected across the field winding A resistance is connected parallel to the armature A resistance is connected in series with armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The armature may burn The motor will run noisy The motor will stop The motor will continue to run The armature may burn The motor will run noisy The motor will stop The motor will continue to run ANSWER DOWNLOAD EXAMIANS APP
DC Motors By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor? Stator Shaft Frame Commutator Stator Shaft Frame Commutator ANSWER DOWNLOAD EXAMIANS APP
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