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? 0.96 9.6 0.4 4 0.96 9.6 0.4 4 ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Potential transformer Step-up transformer Auto transformer Current transformer Potential transformer Step-up transformer Auto transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 50% load 25% load Zero load 90% load 50% load 25% load Zero load 90% load ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Magnetising current is greatly increased Hysteresis loss is decreased Reluctance of magnetic path is decreased Eddy current is increased Magnetising current is greatly increased Hysteresis loss is decreased Reluctance of magnetic path is decreased Eddy current is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 1.7 Wb/m² 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 ANSWER DOWNLOAD EXAMIANS APP
Transformers Negative voltage regulation is indicative that the load is None of these inductive only inductive or resistive capacitive only None of these inductive only inductive or resistive capacitive only ANSWER DOWNLOAD EXAMIANS APP
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