Electrical Machines Unbalance 3 - Φ stator currents cause All of these vibrations. double frequency currents in the rotor. heating of rotor. All of these vibrations. double frequency currents in the rotor. heating of rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator can be considered as prime mover. power pump. rectifier. rotating amplifier. prime mover. power pump. rectifier. rotating amplifier. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Number of tappings for each equalizer ring is equal to number of commutator segments. number of pole pairs. number of poles. number of parallel paths. number of commutator segments. number of pole pairs. number of poles. number of parallel paths. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines shape of net flux density is? flat tapped or trapezoidal peaky in nature saddle shape sine wave flat tapped or trapezoidal peaky in nature saddle shape sine wave ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motors, there is large decrease in maximum power factor when the dispersion coefficient is ________________. kept constant to certain value. increased. remains same. decreased. kept constant to certain value. increased. remains same. decreased. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron increases the electrical resistivity of iron. None of these reduces the saturation magnetization. increases the hysteresis loss. increases the electrical resistivity of iron. None of these reduces the saturation magnetization. increases the hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
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