Transformers In an auto transformer, the primary and secondary are _____ coupled. Magnetically as well as electrically Only magnetically None of the listed here Only electrically Magnetically as well as electrically Only magnetically None of the listed here Only electrically ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? High thermal conductivity Low hysteresis loss Mechanical strength High permeability High thermal conductivity Low hysteresis loss Mechanical strength High permeability ANSWER DOWNLOAD EXAMIANS APP
Transformers The voltage transformation ratio of a transformer is equal to the ratio of secondary induced e.m.f. to primary induced e.m.f. secondary terminal voltage to primary applied voltage secondary current to primary current primary turns to secondary turns secondary induced e.m.f. to primary induced e.m.f. secondary terminal voltage to primary applied voltage secondary current to primary current primary turns to secondary turns ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is not a part of transformer installation? Exciter Conservator Breather Buchholz relay Exciter Conservator Breather Buchholz relay ANSWER DOWNLOAD EXAMIANS APP
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? 450 350 210 900 450 350 210 900 ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Natural air cooling Oil cooling Any of the listed here Air blast cooling Natural air cooling Oil cooling Any of the listed here Air blast cooling ANSWER DOWNLOAD EXAMIANS APP
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