Transformers Cores of large transformers are built upto nearly circular cross section in order to reduce Iron losses Eddy current loss Leakage reactance Copper loss Iron losses Eddy current loss Leakage reactance Copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The voltage transformation ratio of a transformer is equal to the ratio of secondary terminal voltage to primary applied voltage secondary induced e.m.f. to primary induced e.m.f. primary turns to secondary turns secondary current to primary current secondary terminal voltage to primary applied voltage secondary induced e.m.f. to primary induced e.m.f. primary turns to secondary turns secondary current to primary current ANSWER DOWNLOAD EXAMIANS APP
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 hot because of heavy iron losses taking place in it due to high flux density cool as there is no secondary current hot because primary will carry heavy current none of above will happen hot because of heavy iron losses taking place in it due to high flux density cool as there is no secondary current ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Power transformer Potential transformer Current transformer Auto transformer Power transformer Potential transformer Current transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is ______ the commercial efficiency. None of the listed here Less than The same as More than None of the listed here Less than The same as More than ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise resulting from vibrations of laminations set by magnetic forces, is termed as Magnetostriction Zoom Hum Boo Magnetostriction Zoom Hum Boo ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS