Electrical Machines Which of the following DC generators has rising V-I characteristics? None of them. Shunt. Series. Compound. None of them. Shunt. Series. Compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging of induction motor occurs at low voltage and when stator and rotor poles are not equal. high voltage and when stator and rotor poles are not equal. high voltage and when stator and rotor poles are equal. low voltage and when stator and rotor poles are equal. low voltage and when stator and rotor poles are not equal. high voltage and when stator and rotor poles are not equal. high voltage and when stator and rotor poles are equal. low voltage and when stator and rotor poles are equal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 40, s = 5.79 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 40, s = 5.79 %. P = 50, s = 4.43 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? None of these High voltage regulation Good voltage regulation Low short circuit current None of these High voltage regulation Good voltage regulation Low short circuit current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction effect is more in which of the following methods? None of these armature resistance control field weakening method same in both methods None of these armature resistance control field weakening method same in both methods ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator sparking between brushes and commutator surface may be due to too rapid reversal of current. under commutation. over commutation. any of the above. too rapid reversal of current. under commutation. over commutation. any of the above. ANSWER DOWNLOAD EXAMIANS APP
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