Electrical Machines Armature reaction in dc motor results short circuit. decrease in speed. increase in speed. open circuit. short circuit. decrease in speed. increase in speed. open circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The brush-axis of a bipolar dc motor is rotated by 90°. The effect of this rotation on the back emf Eband the torque developed Tdwould be such that Eb is zero, but Td is unchanged both Eb and Td are unchanged Eb is unchanged, but Td is zero both Eb and Td are zero Eb is zero, but Td is unchanged both Eb and Td are unchanged Eb is unchanged, but Td is zero both Eb and Td are zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be None of these 6% and -4% 4.8% and -3.2% 3.2% and -1.6% None of these 6% and -4% 4.8% and -3.2% 3.2% and -1.6% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field-flux axis and armature-mmf axis are respectively along quadrature axis and interpolar axis direct axis and indirect axis direct axis and interpolar axis quadrature axis and direct axis quadrature axis and interpolar axis direct axis and indirect axis direct axis and interpolar axis quadrature axis and direct axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space waveform of the air-gap flux distribution affects voltage but not the torque torque but not the voltage both the torque and voltage neither the voltage nor the torque voltage but not the torque torque but not the voltage both the torque and voltage neither the voltage nor the torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. 234.76 N-m. cant be determined. 266.20 N-m. 133.22 N-m 234.76 N-m. cant be determined. 266.20 N-m. 133.22 N-m ANSWER DOWNLOAD EXAMIANS APP
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