Electrical Machines A DC generator beyond critical resistance will generate maximum power. no voltage. maximum current. maximum voltage. maximum power. no voltage. maximum current. maximum voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following transformer insulating oil generally used in India? Paraffin based insulating oil. Naphtha based insulating oil. Olefin based insulating oil. Aromatics based insulating oil. Paraffin based insulating oil. Naphtha based insulating oil. Olefin based insulating oil. Aromatics based insulating oil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines, the interpoles are provided to counteract the reactance voltage and the cross-magnetizi to make commutation spark less. both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to counteract the reactance voltage and the cross-magnetizi to make commutation spark less. both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by harmonics developed in the motor low voltage supply high loads improper design of stator laminations harmonics developed in the motor low voltage supply high loads improper design of stator laminations ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce hysteresis loss. vibrations. copper loss. eddy electric current loss. hysteresis loss. vibrations. copper loss. eddy electric current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, alternator has generated emf per phase of 230 V with 10% 3rd harmonic and 6% 5th harmonic content. Calculate rms line voltage for star connection. 230.2 V. 100 V. 399 V. 50 V. 230.2 V. 100 V. 399 V. 50 V. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS