Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is sinusoidal co- sinusoidal flat-topped rectangular sinusoidal co- sinusoidal flat-topped rectangular ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 0 Hz 25 Hz 50 Hz 100 Hz 0 Hz 25 Hz 50 Hz 100 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor Decrease. Increase. Remains same. None of these. Decrease. Increase. Remains same. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a synchronous motor is running at synchronous speed, the damper winding produces both 1 and 2. eddy current torque. no torque. damping torqe. both 1 and 2. eddy current torque. no torque. damping torqe. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The back emf produced in a dc motor depends on P. none of these. P and Z. Z. P. none of these. P and Z. Z. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 1 KVA, 230 V, 50 Hz, single phase transformer has an eddy current loss of 30 watts. The eddy current loss when the transformer is excited by a dc source of same voltage will be more than 30 W 30 W zero watt less than 30 W more than 30 W 30 W zero watt less than 30 W ANSWER DOWNLOAD EXAMIANS APP
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