Electrical Machines If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is All of these minimum zero maximum All of these minimum zero maximum ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generator will not build up voltage due to wrong direction of rotation. any one of above. if it has lost residual magnetism. if field resistance is more than critical resistance. due to wrong direction of rotation. any one of above. if it has lost residual magnetism. if field resistance is more than critical resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause All of these heating of rotor. double frequency currents in the rotor. vibrations. All of these heating of rotor. double frequency currents in the rotor. vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole DC generator runs at 1500 rpm. The frequency of current in the armature winding is: 50 Hz. 100 Hz. 25 Hz. Zero Hz. 50 Hz. 100 Hz. 25 Hz. Zero Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be 26.21 kW. 23.06 kW. 24.11 kW. 25 kW. 26.21 kW. 23.06 kW. 24.11 kW. 25 kW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/V ratio of a DC motor is an indication of Starting torque. Speed regulation. Running Torque. Effiency. Starting torque. Speed regulation. Running Torque. Effiency. ANSWER DOWNLOAD EXAMIANS APP
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