Electrical Machines In which transformer, the tertiary winding is used? Delta - star Delta - delta Star - delta Star - star Delta - star Delta - delta Star - delta Star - star ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole, 3-phase induction motor is running at 4% slip at full load. If the speed of the motor is 720 rpm, the supply frequency is 50 Hz 40 HZ 60 Hz 25 Hz 50 Hz 40 HZ 60 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing of DC generator means neutralization of residual magnetism. None of these increasing flux density by providing extra ampere-turns in field. creation of residual magnetism by a DC source. neutralization of residual magnetism. None of these increasing flux density by providing extra ampere-turns in field. creation of residual magnetism by a DC source. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? All of these increase the maintenance and repair increases the design cost increase the iron loss All of these increase the maintenance and repair increases the design cost increase the iron loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Resistance commutation is used generally in case of DC machines above 10 kW. fractional kW DC machines. None of these DC machines bellow 5 kW. DC machines above 10 kW. fractional kW DC machines. None of these DC machines bellow 5 kW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, the demagnetizing effect of armature reaction is due to magnetic saturation in half of the field pole component of armature mmf along field axis non-sinusoidal nature of armature mmf uneven air-gap length magnetic saturation in half of the field pole component of armature mmf along field axis non-sinusoidal nature of armature mmf uneven air-gap length ANSWER DOWNLOAD EXAMIANS APP
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