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? 24°. 30°. 45°. 10°. 24°. 30°. 45°. 10°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At what power factor, the voltage regulation of a transformer can be zero ? Lagging power factor. Zero power factor. Unity power factor. Leading power factor. Lagging power factor. Zero power factor. Unity power factor. Leading power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Motor for constant load torque, what will happen to the armature current if armature resistance increases? Decreases. Increases. Remain unchanged None of above. Decreases. Increases. Remain unchanged None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor electromagnetic power varies inversely as applied voltage directly as square of applied voltage None of these directly as applied voltage inversely as applied voltage directly as square of applied voltage None of these directly as applied voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power flow of a dc motor, with respect to a DC generator is increased. modified. reversed. none of these. increased. modified. reversed. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is power factor of a 3 - φ induction motor at no load? Low. Equal to 1. Same as full load. High. Low. Equal to 1. Same as full load. High. ANSWER DOWNLOAD EXAMIANS APP
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