Electrical Machines If field current is decreased in shunt dc motor, the speed of the motor remains same. None of these decreases. increases. remains same. None of these decreases. increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The basic function of a transformer is to change the level of the voltage the power factor the power level the frequency the level of the voltage the power factor the power level the frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The interpoles in dc machines have a tapering shape in order to reduce the saturation in the interpole economise on the material required for interpoles and their windings reduce the overall weight increase the acceleration of commutation reduce the saturation in the interpole economise on the material required for interpoles and their windings reduce the overall weight increase the acceleration of commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a transformer has turns ratio K, the primary and secondary current are I1 and I2 respectively and magnetizing current and core loss component of no load current Iμ and Iw respectively, then I1 = KI2 + Iw. I1 = KI2 + Iμ. I1 = KI2. I1 = KI2 + Iw + Iμ.ok I1 = KI2 + Iw. I1 = KI2 + Iμ. I1 = KI2. I1 = KI2 + Iw + Iμ.ok ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator in case the brushes are moved so as to bring them in magnetic neutral axis, then, there will be demagnetisation. cross-magnetisation. none of above. cross-magnetization as well as demagnetization. demagnetisation. cross-magnetisation. none of above. cross-magnetization as well as demagnetization. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has negative speed regulation? Shunt motors. Differential compound motors. Both B and C. Series motors. Shunt motors. Differential compound motors. Both B and C. Series motors. ANSWER DOWNLOAD EXAMIANS APP
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