Transformers When secondary of a current transformer is open-circuited its iron core will be hot because primary will carry heavy current none of above will happen cool as there is no secondary current hot because of heavy iron losses taking place in it due to high flux density hot because primary will carry heavy current none of above will happen cool as there is no secondary current hot because of heavy iron losses taking place in it due to high flux density ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum efficiency of a distribution transformer is at 80% full load at full load at no load at 50% full load at 80% full load at full load at no load at 50% full load ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary of a transformer are ______ coupled. None of the listed here Electrically Electrically and magnetically Magnetically None of the listed here Electrically Electrically and magnetically Magnetically ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum flux produced in the core of a transformer is ______ None of the listed here Inversely proportional to supply frequency Directly proportional to supply frequency Inversely proportional to primary voltage None of the listed here Inversely proportional to supply frequency Directly proportional to supply frequency Inversely proportional to primary voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of cooling a power transformer is oil cooling Any of these natural air cooling air blast cooling oil cooling Any of these natural air cooling air blast cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers The voltage transformation ratio of a transformer is equal to the ratio of secondary current to primary current secondary induced e.m.f. to primary induced e.m.f. primary turns to secondary turns secondary terminal voltage to primary applied voltage secondary current to primary current secondary induced e.m.f. to primary induced e.m.f. primary turns to secondary turns secondary terminal voltage to primary applied voltage ANSWER DOWNLOAD EXAMIANS APP
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