Electrical Machines In a synchronous motor, damper windings are provided on rotor shaft. stator frame. None of these pole faces. rotor shaft. stator frame. None of these pole faces. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A motor armature conductor of length 0.5 m is exposed to a flux density of 4 Wb / m2. Calculate the force experienced by the conductor, when the armature current is 5 Amp? Can't be determined. None of these. 15 N. 20 N. Can't be determined. None of these. 15 N. 20 N. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as T ∝ √P. T ∝ P. T2 ∝ P3. T is independent of P. T ∝ √P. T ∝ P. T2 ∝ P3. T is independent of P. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation of the synchronous generator fails, it acts as a/an induction generator. induction motor. synchronous generator. synchronous motor. induction generator. induction motor. synchronous generator. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is increased, the power factor is leading power factor lagging power factor unity power factor None of these leading power factor lagging power factor unity power factor None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines, the interpoles are provided to counteract the reactance voltage and the cross-magnetizi to make commutation spark less. both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to counteract the reactance voltage and the cross-magnetizi to make commutation spark less. both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. ANSWER DOWNLOAD EXAMIANS APP
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