Electrical Machines Which of the following represents the rotating losses of machine? All of the them Hysteresis losses Eddy current losses Friction and windage losses All of the them Hysteresis losses Eddy current losses Friction and windage losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In circle diagram for induction motor, diameter of circle represents which of the following ? Running torque. Slip. Rotor current. Line voltage. Running torque. Slip. Rotor current. Line voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the air gap of IM is increased, ____________ will increase. speed. magnetizing current. power factor. air gap flux. speed. magnetizing current. power factor. air gap flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited? 30°. 45°. 24°. 10°. 30°. 45°. 24°. 10°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 120 KW, 50 Hz, star connected synchronous motor operating at 0.8 power factor leading has full load efficiency of 91%. The armature resistance is equal to 0.08Ω. The magnitude of armature current is nearly equal to 240 A. 127 A. 173 A. 190 A. 240 A. 127 A. 173 A. 190 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor when the rotor speed exceeds the synchronous speed during hunting the damper bars develop induction generator torque. the damper bars develop synchronous motor torque. the damper bars develop induction motor torque. negative sequence currents are generated. the damper bars develop induction generator torque. the damper bars develop synchronous motor torque. the damper bars develop induction motor torque. negative sequence currents are generated. ANSWER DOWNLOAD EXAMIANS APP
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