Electrical Machines What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field-flux axis and armature-mmf axis are respectively along direct axis and indirect axis quadrature axis and direct axis direct axis and interpolar axis quadrature axis and interpolar axis direct axis and indirect axis quadrature axis and direct axis direct axis and interpolar axis quadrature axis and interpolar axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be None of these pulsating and unidirectional oscillating steady and unidirectional None of these pulsating and unidirectional oscillating steady and unidirectional ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short circuit test on a transformer gives copper loss at over load. copper loss at any load. copper loss at half load. copper loss at full load. copper loss at over load. copper loss at any load. copper loss at half load. copper loss at full load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On what factors the speed of dc motor depends? Field flux. All of these. Applied voltage. Armature current Ia. Field flux. All of these. Applied voltage. Armature current Ia. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will shift forward by less than 90° coincide with the GNA shift forward by more than 90° shift forward by 90° shift forward by less than 90° coincide with the GNA shift forward by more than 90° shift forward by 90° ANSWER DOWNLOAD EXAMIANS APP
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