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 less than 15 A more than 15 A 15 A None of these less than 15 A more than 15 A 15 A None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Iron losses Copper losses Friction losses Total losses Iron losses Copper losses Friction losses Total losses ANSWER DOWNLOAD EXAMIANS APP
Transformers When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is 240 V 12 V 2,400 V 120 V 240 V 12 V 2,400 V 120 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Which winding of the transformer has less cross-sectional area? Primary winding High voltage winding Secondary winding Low voltage winding Primary winding High voltage winding Secondary winding Low voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it avoids core saturation and high voltage induction None of these protects the primary circuit is safe to human beings avoids core saturation and high voltage induction None of these protects the primary circuit is safe to human beings ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer is smallest? 2kVA, 200 Hz 2kVA, 500 Hz 2kVA, 50 Hz 2kVA, 400 Hz 2kVA, 200 Hz 2kVA, 500 Hz 2kVA, 50 Hz 2kVA, 400 Hz ANSWER DOWNLOAD EXAMIANS APP
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