Transformers The no load ratio of a 50 Hz single phase transformer is 6000/250 V. The maximum flux in the core is 0.06 Wb. What is the number of primary turns? 210 900 450 350 210 900 450 350 ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise resulting from vibrations of laminations set by magnetic forces, is termed as Boo Hum Zoom Magnetostriction Boo Hum Zoom Magnetostriction ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer is always made on ______ Low voltage winding Either low or high voltage winding None of the listed here High voltage winding Low voltage winding Either low or high voltage winding None of the listed here High voltage winding 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 Short circuit test on transformers is conducted to determine copper losses core losses hysteresis losses eddy current losses copper losses core losses hysteresis losses eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it None of these protects the primary circuit avoids core saturation and high voltage induction is safe to human beings None of these protects the primary circuit avoids core saturation and high voltage induction is safe to human beings ANSWER DOWNLOAD EXAMIANS APP
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