Electrical Machines In a DC generator if field winding attains the critical resistance the voltage generated will be zero. machine will generate maximum power. field winding will burn. machine will generate maximum voltage. the voltage generated will be zero. machine will generate maximum power. field winding will burn. machine will generate maximum voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is employed to brake None of these non reversing drive reversing drive both 1 and 2 None of these non reversing drive reversing drive both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Use of fractional pitch winding make it stiffer. results in reduced axial length of the machine. results in reduced leakage reactance. All of these make it stiffer. results in reduced axial length of the machine. results in reduced leakage reactance. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to armature reaction. presence of commutator. high resistance of carbon brushes. reactance voltage. armature reaction. presence of commutator. high resistance of carbon brushes. reactance voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor output power? 1450W 2000W 1820W 1920W 1450W 2000W 1820W 1920W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 25 Hz 50 Hz 0 Hz 100 Hz 25 Hz 50 Hz 0 Hz 100 Hz ANSWER DOWNLOAD EXAMIANS APP
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