Electrical Machines In a dc machine, the demagnetizing effect of armature reaction is due to component of armature mmf along field axis non-sinusoidal nature of armature mmf magnetic saturation in half of the field pole uneven air-gap length component of armature mmf along field axis non-sinusoidal nature of armature mmf magnetic saturation in half of the field pole uneven air-gap length ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increase the iron loss increase the maintenance and repair All of these increases the design cost increase the iron loss increase the maintenance and repair All of these increases the design cost ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________. 8. 6. 2. 4. 8. 6. 2. 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor the speed can be increased by Increasing the armature current. Increasing the field current. Increasing the field current. Decreasing the field current. Increasing the armature current. Increasing the field current. Increasing the field current. Decreasing the field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 24 10 12 5 24 10 12 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The basic function of a transformer is to change the frequency the power factor the power level the level of the voltage the frequency the power factor the power level the level of the voltage ANSWER DOWNLOAD EXAMIANS APP
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