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. 50 V. 100 V. 399 V. 230.2 V. 50 V. 100 V. 399 V. 230.2 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening control method is used for the _________ ? None of these both A and B above rated speed below rated speed None of these both A and B above rated speed below rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase power factor. cost of operation. breaking torque. starting torque. power factor. cost of operation. breaking torque. starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? -3.33% -3% +3.33% +3% -3.33% -3% +3.33% +3% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two windings provided on the stator of 1-phase induction motor, one main winding and the other auxiliary winding are connected in series either of these depending on the design of the motor in parallel through inductive coupling in series either of these depending on the design of the motor in parallel through inductive coupling ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of 200 V. 800 V. 400 V. 100 V. 200 V. 800 V. 400 V. 100 V. ANSWER DOWNLOAD EXAMIANS APP
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