Electrical Machines The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is 50 Hz. 25 Hz. 60 Hz. 16.67 Hz. 50 Hz. 25 Hz. 60 Hz. 16.67 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce hysteresis loss. vibrations. eddy electric current loss. copper loss. hysteresis loss. vibrations. eddy electric current loss. copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, the demagnetizing effect of armature reaction is due to uneven air-gap length non-sinusoidal nature of armature mmf magnetic saturation in half of the field pole component of armature mmf along field axis uneven air-gap length non-sinusoidal nature of armature mmf magnetic saturation in half of the field pole component of armature mmf along field axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05? 1.1. 0.905. 20. 0.05. 1.1. 0.905. 20. 0.05. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The effect of ------------------ on main field flux is armature reaction? armature flux All of these armature mmf armature current armature flux All of these armature mmf armature current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low voltage rating which winding is employed to DC machine? No wave and lap winding. Wave winding. Lap winding. Both wave and lap winding. No wave and lap winding. Wave winding. Lap winding. Both wave and lap winding. ANSWER DOWNLOAD EXAMIANS APP
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