Electrical Machines What is the phase difference between two windings of A.C servomotor ? 90°. 60°. 120°. 30°. 90°. 60°. 120°. 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are mechanically linked. electrically linked. conductively linked. inductively linked. mechanically linked. electrically linked. conductively linked. inductively linked. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator can be considered as rotating amplifier. prime mover. power pump. rectifier. rotating amplifier. prime mover. power pump. rectifier. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, if direct axis reactance and quadrature axis reactance is equal, then power developed due to reluctance is infinite value any of the above maximum zero infinite value any of the above maximum zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The total core loss of a 400 V, 50 Hz transformer is 2400W, when it is supplied by 200 V, 25 Hz loss is 800W. Calculate eddy current loss and hysteresis loss? 1000W , 1400W 800W, 1600W 1400W, 1000W 1600W, 800W 1000W , 1400W 800W, 1600W 1400W, 1000W 1600W, 800W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be, 4. 3. 7. 12. 4. 3. 7. 12. ANSWER DOWNLOAD EXAMIANS APP
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