Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Equal to None of the listed here Less than Higher than Equal to None of the listed here Less than Higher than ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to load changes magnetostriction mechanical vibrations oil in the transformer load changes magnetostriction mechanical vibrations oil in the transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Negative voltage regulation is indicative that the load is inductive or resistive inductive only capacitive only None of these inductive or resistive inductive only capacitive only None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 4.7 Wb/m² 3.7 Wb/m² 2.7 Wb/m² 1.7 Wb/m² 4.7 Wb/m² 3.7 Wb/m² 2.7 Wb/m² 1.7 Wb/m² 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 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 secondary induced e.m.f. to primary induced e.m.f. ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it protects the primary circuit avoids core saturation and high voltage induction None of these is safe to human beings protects the primary circuit avoids core saturation and high voltage induction None of these is safe to human beings ANSWER DOWNLOAD EXAMIANS APP
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