DC Motors Ward-Leonard control is basically a Field control method Voltage control method Armature resistance control method Field divertor method Field control method Voltage control method Armature resistance control method Field divertor method ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thermistor Thyristor Thyratron Transistor Thermistor Thyristor Thyratron Transistor 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 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 10% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Shunt armature control Mechanical loading system Field control Armature voltage control Shunt armature control Mechanical loading system Field control Armature voltage control ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when The field is opened The load is increase Load is removed The armature circuit is opened. The field is opened The load is increase Load is removed The armature circuit is opened. ANSWER DOWNLOAD EXAMIANS APP
DC Motors The friction and windage losses in a dc motor depends upon Armature current Flux Speed Field and armature resistance Armature current Flux Speed Field and armature resistance ANSWER DOWNLOAD EXAMIANS APP
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