Electrical Machines The oscillation in a synchronous motor can be damped out by oscillation cannot be damped. maintaining constant excitation. providing damper bars in the rotor pole faces. running the motor on leading power factors. oscillation cannot be damped. maintaining constant excitation. providing damper bars in the rotor pole faces. running the motor on leading power factors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer zero voltage regulation is achieved at a load power factor which is leading unity lagging zero leading unity lagging zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To eliminate the 5th harmonic in the induced voltages their respective pitch factor angle should be 30° 72° 36° 18° 30° 72° 36° 18° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which transformer, the tertiary winding is used? Delta - star Star - delta Delta - delta Star - star Delta - star Star - delta Delta - delta Star - star ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase starting torque. cost of operation. breaking torque. power factor. starting torque. cost of operation. breaking torque. power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is self starting? Single phase induction motor. Poly-phase induction motor. Poly-phase synchronous machine. None of these. Single phase induction motor. Poly-phase induction motor. Poly-phase synchronous machine. None of these. ANSWER DOWNLOAD EXAMIANS APP
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