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 None of these more than 15 A 15 A less than 15 A None of these more than 15 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers The leakage flux in a transformer depends upon load current, voltage and frequency load current, voltage, frequency and power factor load current load current and voltage load current, voltage and frequency load current, voltage, frequency and power factor load current load current and voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it protects the primary circuit None of these avoids core saturation and high voltage induction is safe to human beings protects the primary circuit None of these avoids core saturation and high voltage induction is safe to human beings ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer is smallest? 2kVA, 200 Hz 2kVA, 50 Hz 2kVA, 500 Hz 2kVA, 400 Hz 2kVA, 200 Hz 2kVA, 50 Hz 2kVA, 500 Hz 2kVA, 400 Hz ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. About the same as Greater than Smaller than None of the listed here About the same as Greater than Smaller than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because it _______ Uses capacitive coupling Is a static device Uses inductive coupling Uses electric coupling Uses capacitive coupling Is a static device Uses inductive coupling Uses electric coupling ANSWER DOWNLOAD EXAMIANS APP
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