Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Current transformer Power transformer Auto transformer Potential transformer Current transformer Power transformer Auto transformer Potential transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to load changes mechanical vibrations magnetostriction oil in the transformer load changes mechanical vibrations magnetostriction oil in the transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as ringing buzz zoom hum ringing buzz zoom hum ANSWER DOWNLOAD EXAMIANS APP
Transformers The leakage flux in a transformer depends upon load current load current, voltage, frequency and power factor load current, voltage and frequency load current and voltage load current load current, voltage, frequency and power factor load current, voltage and frequency load current and voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer is smallest? 2kVA, 500 Hz 2kVA, 400 Hz 2kVA, 200 Hz 2kVA, 50 Hz 2kVA, 500 Hz 2kVA, 400 Hz 2kVA, 200 Hz 2kVA, 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine core loss copper loss magnetising current magnetising current and loss efficiency core loss copper loss magnetising current magnetising current and loss efficiency ANSWER DOWNLOAD EXAMIANS APP
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