Electrical Machines A 5 KVA transformer has a turns ratio of N1/N2 = 10. The impedance of primary winding is 3+j5 ohms while that of secondary winding is 0.5+j0.8 ohms. The impedance of transformer when referred to primary will be 3.5+j5.8 ohms 53+j85 ohms 3.05+j5.08 ohms 8+j13 ohms 3.5+j5.8 ohms 53+j85 ohms 3.05+j5.08 ohms 8+j13 ohms ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively large and thick large and thin less and thin less and thick large and thick large and thin less and thin less and thick ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine will have maximum efficiency? Electrical power transformer. Induction motor. DC motor. Electrical power generator. Electrical power transformer. Induction motor. DC motor. Electrical power generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the emf generated by the armature is maximum when rate of change of flux is minimum. shaft rotation is high. induced voltage is high. rate of change of flux is maximum. rate of change of flux is minimum. shaft rotation is high. induced voltage is high. rate of change of flux is maximum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point. 33.33 Amp. 29 Amp. 44.47 Amp. 43 Amp. 33.33 Amp. 29 Amp. 44.47 Amp. 43 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines CRGO steel is used in the core of transformer to reduce both eddy current and hysteresis loss. ohmic loss. hysteresis loss. eddy current loss. both eddy current and hysteresis loss. ohmic loss. hysteresis loss. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
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