Electrical Machines The power developed by salient pole synchronous machine is/are excitation power only None of these both 1 and 2 power due to saliency or reluctance only excitation power only None of these both 1 and 2 power due to saliency or reluctance only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field current is reduced to zero the maximum power developed by alternator is 5.46 KW. 2.73 KW. 0.9103 KW. 1.644 KW. 5.46 KW. 2.73 KW. 0.9103 KW. 1.644 KW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their polarities are properly connected KVA ratings are equal percentage impedances are equal turn- ratios are exactly equal polarities are properly connected KVA ratings are equal percentage impedances are equal turn- ratios are exactly equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are high maintenance cost. poor overall efficiency. high initial cost. all of above. high maintenance cost. poor overall efficiency. high initial cost. all of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1200 1000 1080 1203 1200 1000 1080 1203 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole, 3-phase induction motor is running at 4% slip at full load. If the speed of the motor is 720 rpm, the supply frequency is 25 Hz 60 Hz 40 HZ 50 Hz 25 Hz 60 Hz 40 HZ 50 Hz ANSWER DOWNLOAD EXAMIANS APP
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