Transformers Leakage flux in a transformer occurs because Air is not a good magnetic insulator Transformer is not an efficient device Iron core has high permeability Applied voltage is sinusoidal Air is not a good magnetic insulator Transformer is not an efficient device Iron core has high permeability Applied voltage is sinusoidal ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary of a transformer are ______ coupled. Electrically and magnetically None of the listed here Magnetically Electrically Electrically and magnetically None of the listed here Magnetically Electrically ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be mechanical vibrations fluctuating load poor insulation saturation of core mechanical vibrations fluctuating load poor insulation saturation of core ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because Uses capacitive coupling Uses inductive coupling Uses electric coupling A static device Uses capacitive coupling Uses inductive coupling Uses electric coupling A static device ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 95 % 65% 85% 75% 95 % 65% 85% 75% ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as buzz hum zoom ringing buzz hum zoom ringing ANSWER DOWNLOAD EXAMIANS APP
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