Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Current transformer Step-up transformer Potential transformer Auto transformer Current transformer Step-up transformer Potential transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Auto transformer Current transformer Power transformer Potential transformer Auto transformer Current transformer Power transformer Potential transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test of a transformer helps us to find its Iron loss Full load cu loss None of the listed here Cu loss at no load Iron loss Full load cu loss None of the listed here Cu loss at no load ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Leakage flux is small Iron core is used Applied voltage and frequency are constant Losses are small Leakage flux is small Iron core is used Applied voltage and frequency are constant Losses are small ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 85% 75% 65% 95 % 85% 75% 65% 95 % ANSWER DOWNLOAD EXAMIANS APP
Transformers Which winding of the transformer has less cross-sectional area? Low voltage winding High voltage winding Primary winding Secondary winding Low voltage winding High voltage winding Primary winding Secondary winding ANSWER DOWNLOAD EXAMIANS APP
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