Transformers The noise produced by a transformer is termed as ringing hum zoom buzz ringing hum zoom buzz 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 2,400 V 240 V 120 V 12 V 2,400 V 240 V 120 V 12 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer is always made on ______ None of the listed here High voltage winding Either low or high voltage winding Low voltage winding None of the listed here High voltage winding Either low or high voltage winding Low voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum flux produced in the core of a transformer is ______ Directly proportional to supply frequency Inversely proportional to supply frequency None of the listed here Inversely proportional to primary voltage Directly proportional to supply frequency Inversely proportional to supply frequency None of the listed here Inversely proportional to primary voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load on a transformer is carried out to determine efficiency of the transformer magnetising current magnetising current and loss copper loss efficiency of the transformer magnetising current magnetising current and loss copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same polarity same kVA rating same number of turns on the secondary side. same efficiency same polarity same kVA rating same number of turns on the secondary side. same efficiency ANSWER DOWNLOAD EXAMIANS APP
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