A. Frequency
B. Voltage
C. Current
D. Any of the above
Transformers
Transformers
A. Conservator
B. Breather
C. Bushings
D. Buchholz relay
A. small air gap
B. large leakage flux
C. laminated silicon steel core
D. fewer rotating parts
A. electrical fault inside the transformer itself
B. electrical fault outside the transformer in outgoing feeder
C. for both outside and inside faults
D. none of the above
A. short-circuiting of the secondaries
B. power factor of one of the transformers is leading while that of the other lagging
C. transformers having higher copper losses will have negligible core losses
D. loading of the transformers not in proportion to their kVA ratings
A. the current on secondary side is negligible
B. the voltage on secondary side does not vary
C. the voltage applied on primary side is low
D. full-load current is not supplied to the transformer
A. Hysteresis losses are reduced
B. Saving in winding material
C. Copper losses are negligible
D. Eddy losses are totally eliminated
A. no-load
B. half-load
C. near full-load
D. 10% overload
A. Primary winding
B. Secondary winding
C. Low voltage winding
D. High voltage winding
A. hysteresis loss
B. eddy current losses
C. copper losses
D. all of the above
