Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 4 0.96 0.4 9.6 4 0.96 0.4 9.6 ANSWER DOWNLOAD EXAMIANS APP
Transformers The core type transformer is generally suitable for ______ High voltage and small output Low voltage and high output High voltage and high output None of the listed here High voltage and small output Low voltage and high output High voltage and high output None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 2 μH 8 μH 4 μH 2 mH 2 μH 8 μH 4 μH 2 mH ANSWER DOWNLOAD EXAMIANS APP
Transformers Harmonics in transformer result in magnetic interference with communication circuits All of the listed here increased I2R losses increased core losses magnetic interference with communication circuits All of the listed here increased I2R losses increased core losses ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. None of the listed here Only magnetically Only electrically Magnetically as well as electrically None of the listed here Only magnetically Only electrically Magnetically as well as electrically ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to mechanical vibrations magnetostriction oil in the transformer load changes mechanical vibrations magnetostriction oil in the transformer load changes ANSWER DOWNLOAD EXAMIANS APP
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