Electrical Machines In a star - delta starting of an IM reduced voltage is applied to the stator. applied voltage per stator phase is 57.7 % of a line volt resistance is inserted in the rotor. line voltage is 57.7 % of stator voltage. reduced voltage is applied to the stator. applied voltage per stator phase is 57.7 % of a line volt resistance is inserted in the rotor. line voltage is 57.7 % of stator voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tertiary winding in a transformer is mostly delta connected. star connected. zig - zag star connected. zig - zag delta connected. delta connected. star connected. zig - zag star connected. zig - zag delta connected. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous generator, if mechanical input is increased with constant excitation, the load angle will either increase or decrease None of these increase decrease either increase or decrease None of these increase decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of ohmic losses. mechanical losses. eddy current losses. hysteresis losses. ohmic losses. mechanical losses. eddy current losses. hysteresis 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 150. 180. 170. 160. 150. 180. 170. 160. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If any two leads from slip rings are interchanged in a 3 - Φ induction motor, the motor will get damaged. run in a direction opposite to previous one. continue running in the same direction as before. not run. get damaged. run in a direction opposite to previous one. continue running in the same direction as before. not run. ANSWER DOWNLOAD EXAMIANS APP
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