Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Hysteresis losses are reduced Saving in winding material Eddy losses are totally eliminated Copper losses are negligible Hysteresis losses are reduced Saving in winding material Eddy losses are totally eliminated Copper losses are negligible ANSWER DOWNLOAD EXAMIANS APP
Transformers The flux in the core of a single phase transformer is _____ Purely rotating one Partly alternating and partly rotating None of the listed here Purely alternating one Purely rotating one Partly alternating and partly rotating None of the listed here Purely alternating one ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is 5 25 0.2 0.4 5 25 0.2 0.4 ANSWER DOWNLOAD EXAMIANS APP
Transformers When a 6 V battery is connected across the primary of a transformer with a turns ratio of 8, the secondary voltage is 0.75 V 0 V 48 V 6 V 0.75 V 0 V 48 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer is always made on ______ None of the listed here Either low or high voltage winding Low voltage winding High voltage winding None of the listed here Either low or high voltage winding Low voltage winding High voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of 15 A None of these less than 15 A more than 15 A 15 A None of these less than 15 A more than 15 A ANSWER DOWNLOAD EXAMIANS APP
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