Electrical Machines The constant losses in transformer is/are hysteresis loss. eddy current loss. both 2 and 3. copper loss. hysteresis loss. eddy current loss. both 2 and 3. copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 2/√5 1/√5 1/√2 1/3 2/√5 1/√5 1/√2 1/3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 50 Hz 0 Hz 25 Hz 100 Hz 50 Hz 0 Hz 25 Hz 100 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on rotor speed. synchronous speed. core loss component. shaft torque. rotor speed. synchronous speed. core loss component. shaft torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then I1 > I2 None of these I1 = I2 I1 < I2 I1 > I2 None of these I1 = I2 I1 < I2 ANSWER DOWNLOAD EXAMIANS APP
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