Electrical Machines A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle? 60° 30° 10° 45° 60° 30° 10° 45° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load current in a transformer lags the applied voltage by about 115°. 90°. 0°. about 75°. about 115°. 90°. 0°. about 75°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Breather is provided in a transformer to filter the transformer oil. provide cold air in transformer. absorb moisture from air entering in transformer. absorb moisture of air during breathing. filter the transformer oil. provide cold air in transformer. absorb moisture from air entering in transformer. absorb moisture of air during breathing. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Thin laminations are used in a machine in order to reduce Copper losses Both 1 and 2 Hysteresis losses Eddy current losses Copper losses Both 1 and 2 Hysteresis losses Eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at unity power factor. leading power factor. any of the above. lagging power factor. unity power factor. leading power factor. any of the above. lagging power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is supply voltage control field current control armature circuit resistance control All of these supply voltage control field current control armature circuit resistance control All of these ANSWER DOWNLOAD EXAMIANS APP
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