Electrical Machines Which of the following is/are the methods to reduce the armature reaction and its effects? All of these pole chamfering pole stacking compensating winding All of these pole chamfering pole stacking compensating winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to frequency of waveform. flux per pole. All of these number of turns in coil. frequency of waveform. flux per pole. All of these number of turns in coil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is power factor of a 3 - φ induction motor at no load? Same as full load. Low. High. Equal to 1. Same as full load. Low. High. Equal to 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The material used for commutator brushes is mostly copper. cast iron. mica. carbon. copper. cast iron. mica. carbon. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the armature current of 5 Amp is flowing through the dc motor the torque produced is 47 Nm. Keeping the speed constant if the armature current is increased to 7 amp, calculate the new torque. Assume losses to be constant. 38.5 Nm. 65.8 Nm. 27.73 Nm . 74 Nm. 38.5 Nm. 65.8 Nm. 27.73 Nm . 74 Nm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In auto transformer if the turn ratio is K, what is the power transferred inductively? both A and B None of these (1-K) × input power K × input power both A and B None of these (1-K) × input power K × input power ANSWER DOWNLOAD EXAMIANS APP
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