Electrical Machines To eliminate the 5th harmonic in the induced voltages their respective pitch factor angle should be 30° 18° 72° 36° 30° 18° 72° 36° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced DC Shunt Motor The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. DC Shunt Motor The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to approx to one. greater than one. less than one. very low approx to one. greater than one. less than one. very low ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a part of transformer? Commutator. Radiator. Conservator tank. Tap changer. Commutator. Radiator. Conservator tank. Tap changer. 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 I1 = I2 I1 < I2 None of these I1 > I2 I1 = I2 I1 < I2 None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 volt dc motor has an armature winding resistance of 0.5 ohm. Calculate the emf induced by the motor if the full load armature current is 23 ampere. 120 volt. 220.4 volt. 218.5 volt. None of these. 120 volt. 220.4 volt. 218.5 volt. None of these. ANSWER DOWNLOAD EXAMIANS APP
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