Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 50 Hz 100 Hz 0 Hz 25 Hz 50 Hz 100 Hz 0 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC Series motor is connected across an AC supply it will run at normal speed. run at lower speed. not run. burn. run at normal speed. run at lower speed. not run. burn. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is 9/16. 16/9. 3/4. 4/3. 9/16. 16/9. 3/4. 4/3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic circuit of a dc shunt generator with negligible armature resistance and brush contact voltage drop remains unsaturated when it delivers full-load current at rated terminal voltage. The brushes are kept in the interpolar axis and speed is maintained constant. When the load is switched off, the terminal voltage would become zero decrease remain the same increase become zero decrease remain the same increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, alternator has generated emf per phase of 230 V with 10% 3rd harmonic and 6% 5th harmonic content. Calculate rms line voltage for star connection. 100 V. 50 V. 230.2 V. 399 V. 100 V. 50 V. 230.2 V. 399 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Total core loss is also called as -------------? Eddy current loss Hysteresis loss Copper loss Magnetic loss Eddy current loss Hysteresis loss Copper loss Magnetic loss ANSWER DOWNLOAD EXAMIANS APP
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