Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is Ns Nr S.Ns Zero Ns Nr S.Ns Zero 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 maximum. induced voltage is high. rate of change of flux is minimum. shaft rotation is high. rate of change of flux is maximum. induced voltage is high. rate of change of flux is minimum. shaft rotation is high. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will increase by 5 %. reduce by 5 %. depend on other factors. remain unchanged. increase by 5 %. reduce by 5 %. depend on other factors. remain unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound 4 pole dc motor has 460 conductors. Find the number of parallel paths between the conductors? 4. 2. data provided is insufficient. 6. 4. 2. data provided is insufficient. 6. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3 - Φ, 4 pole, 50 Hz IM rotating at full load speed of 1440 rpm, calculate speed of rotor field with respect to rotor structure and stator structure respectively? 1440, 1500. 50, 1500. 60, 1440. 60, 1500. 1440, 1500. 50, 1500. 60, 1440. 60, 1500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Ph will increase but Pe will decrease Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Ph will increase but Pe will decrease ANSWER DOWNLOAD EXAMIANS APP
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