Electrical Machines A short circuit test on a transformer gives copper loss at full load. copper loss at half load. copper loss at any load. copper loss at over load. copper loss at full load. copper loss at half load. copper loss at any load. copper loss at over load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be 6% and -4% 4.8% and -3.2% None of these 3.2% and -1.6% 6% and -4% 4.8% and -3.2% None of these 3.2% and -1.6% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor used in hair dryers? Synchronous motors. Cage induction motor. Split phase IM. Shaded pole IM. Synchronous motors. Cage induction motor. Split phase IM. Shaded pole IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In alternator, the rotary part is armature. core. magnetic field poles. none of these. armature. core. magnetic field poles. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator frame in an induction motor is used to hold armature stamping in position. ventilate the armature. protect the whole machine. provide return path for the flux. hold armature stamping in position. ventilate the armature. protect the whole machine. provide return path for the flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, maximum power occurs at a load angle of 0° less than 90° 90° Greater than 90° 0° less than 90° 90° Greater than 90° ANSWER DOWNLOAD EXAMIANS APP
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