Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 10% 21% 41% 11% 10% 21% 41% 11% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking can be used for series motors. compound motors. All of these shunt motors. series motors. compound motors. All of these shunt motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following winding is connected in series with armature winding of DC machine? Compensating winding. Commutating pole winding. Auxiliary winding. Both Compensating and Commutating pole winding. Compensating winding. Commutating pole winding. Auxiliary winding. Both Compensating and Commutating pole winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing of DC generator means creation of residual magnetism by a DC source. None of these increasing flux density by providing extra ampere-turns in field. neutralization of residual magnetism. creation of residual magnetism by a DC source. None of these increasing flux density by providing extra ampere-turns in field. neutralization of residual magnetism. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Reactive power generated or delivered significantly depends on excitation. load angle. both 1 and 2. frequency. excitation. load angle. both 1 and 2. frequency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of squirrel cage induction motor is low at light loads only both A and B low at heavy loads only low at rated load only low at light loads only both A and B low at heavy loads only low at rated load only ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS