Electrical Machines A 500 V, 55 kVA single phase alternator has an effective resistance of 0.5 Ω. An excitation current of 10 A produces 200 A armature current on short circuit and an emf of 450 V on per circuit. The synchronous reactance will be 2.781 Ω. 25.564 Ω. 2.74 Ω. 2.241 Ω. 2.781 Ω. 25.564 Ω. 2.74 Ω. 2.241 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor used in Lathe machine? None of these D.C . series motor. D.C. shunt motor. D.C. cumulative compound motor. None of these D.C . series motor. D.C. shunt motor. D.C. cumulative compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor the 7th harmonic torque may make the motor rotate at (1 / 7)th synchronous speed. This is called resonance. harmonics. cogging. crawling. resonance. harmonics. cogging. crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC Series motor is connected across an AC supply it will not run. burn. run at normal speed. run at lower speed. not run. burn. run at normal speed. run at lower speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The functions of inter poles are both 1 and 2 nullify reactance voltage and improve the commutation. None of these reduce cross magnetization effect and improve commutation both 1 and 2 nullify reactance voltage and improve the commutation. None of these reduce cross magnetization effect and improve commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of a DC motor is laminated to reduce hysteresis loss. copper loss. friction and windage loss. eddy current loss. hysteresis loss. copper loss. friction and windage loss. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
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