Electrical Machines To eliminate 5th harmonic in the induced voltage phase breadth should be 30° 18° 72° 36° 30° 18° 72° 36° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? High voltage regulation None of these Good voltage regulation Low short circuit current High voltage regulation None of these Good voltage regulation Low short circuit current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer core is laminated to reduce eddy current loss. copper loss. both 1 and 2. hysteresis loss. eddy current loss. copper loss. both 1 and 2. hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because rotor is made up of salient poles. relative velocity between stator and rotor mmf’s is not zero. relative velocity between the stator and rotor mmf’s is zero. rotor winding is highly reactive. rotor is made up of salient poles. relative velocity between stator and rotor mmf’s is not zero. relative velocity between the stator and rotor mmf’s is zero. rotor winding is highly reactive. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic field which initially induces emf in the armature in a self excited DC generator is because of residual magnetism. None of these armature reaction. permanent magnets. residual magnetism. None of these armature reaction. permanent magnets. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5Ω and back back emf 200 V is 440 A. 44 A. 40 A. 400 A. 440 A. 44 A. 40 A. 400 A. ANSWER DOWNLOAD EXAMIANS APP
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