Electrical Machines In a 3-phase induction motor, torque and supply voltage are related as T ∝ 1/V T∝ V² T ∝ 1/V² T ∝ V T ∝ 1/V T∝ V² T ∝ 1/V² T ∝ V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field of a dc shunt motor gets opened while the motor is running, then the armature current will drop motor will become slow. motor will attain dangerously high speed armature will oscillate about original speed as the mean speed armature current will drop motor will become slow. motor will attain dangerously high speed armature will oscillate about original speed as the mean speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which DC motor will have least percentage increase of input current, for the same percentage increase in the torque Compound Wound DC Motor DC Shunt Motor DC Series Motor Separately Excited DC Motor Compound Wound DC Motor DC Shunt Motor DC Series Motor Separately Excited DC Motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? a finite negative value a positive finite value 0 ∞ a finite negative value a positive finite value 0 ∞ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors provided with open slots have less breakdown torque. more breakdown torque. higher efficiency. leading power factor. less breakdown torque. more breakdown torque. higher efficiency. leading power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is reduced, the power factor is lagging power factor None of these leading power factor unity power factor lagging power factor None of these leading power factor unity power factor ANSWER DOWNLOAD EXAMIANS APP
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