Electrical Machines Compensating winding is placed in the armature core pole shoe main field All of these armature core pole shoe main field All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fifth harmonic component of the induced voltage in three phase AC generator can be eliminated by using a winding pitch of 5 / 6. 6 / 7. 4 / 5. 2 / 3. 5 / 6. 6 / 7. 4 / 5. 2 / 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The efficiency of a transformer is mainly dependent on dielectric losses. stray losses. copper losses. core losses. dielectric losses. stray losses. copper losses. core losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A load of 900 lbs is to be raised with a lift car weighting 855 lbs at a speed of 110 feet per minute, the over balance being 40 % and percentage efficiency 45 %. Find the horse power of the motor without counterweight 170. 160. 150. 180. 170. 160. 150. 180. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of DC machine is made of silicon steel lamination to increase the permeability. reduce both eddy current and hysteresis loss. reduce eddy current loss only. reduce hysteresis loss only. increase the permeability. reduce both eddy current and hysteresis loss. reduce eddy current loss only. reduce hysteresis loss only. ANSWER DOWNLOAD EXAMIANS APP
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