Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field to earth. in reverse. to a DC source. to an AC source. to earth. in reverse. to a DC source. to an AC source. 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 component of armature mmf along field axis magnetic saturation in half of the field pole uneven air-gap length non-sinusoidal nature of armature mmf component of armature mmf along field axis magnetic saturation in half of the field pole ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output power indicated on the name plate of any motor is always the Power drawn in KW. Gross power. Output power at the shaft. Power drawn in KVA. Power drawn in KW. Gross power. Output power at the shaft. Power drawn in KVA. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The short circuit test on a transformer is conducted to obtain eddy current loss. hysteresis loss. core loses only. copper losses. eddy current loss. hysteresis loss. core loses only. copper losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To have sparkless commutation, the armature reaction effect in a DC machine is neutralized by shifting the brush axis from GNA to MNA. compensating winding and commutating poles. fixing the brush axis inline with the pole axis. increasing field excitation. shifting the brush axis from GNA to MNA. compensating winding and commutating poles. fixing the brush axis inline with the pole axis. increasing field excitation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motor operation depends on stationary magnetic field. either of these. None of these rotating magnetic field. stationary magnetic field. either of these. None of these rotating magnetic field. ANSWER DOWNLOAD EXAMIANS APP
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