Electrical Machines The back emf produced in a dc motor depends on none of these. P. Z. P and Z. none of these. P. Z. P and Z. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The function of field regulator in a DC compound motor is to vary the armature resistance. none of above. control field current. limit the armature current. vary the armature resistance. none of above. control field current. limit the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotor resistance speed control is used in dc shunt motor. squirrel cage induction motor. slip ring induction motor. synchronous motor. dc shunt motor. squirrel cage induction motor. slip ring induction motor. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased both power angle and power factor increase power angle increase and power factor decrease both power angle and power factor decrease power angle decrease and power factor increase both power angle and power factor increase power angle increase and power factor decrease both power angle and power factor decrease power angle decrease and power factor increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to reduce chance of cogging. reduce chance of crawling. increase starting torque. reduce magnetizing current. reduce chance of cogging. reduce chance of crawling. increase starting torque. reduce magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs increase. decrease. None of these either of these. increase. decrease. None of these either of these. ANSWER DOWNLOAD EXAMIANS APP
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