Transformers Distribution transformers are generally designed for maximum efficiency around 25% load Zero load 50% load 90% load 25% load Zero load 50% load 90% load ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Auto transformer Potential transformer Power transformer Current transformer Auto transformer Potential transformer Power transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer breaths in when None of these load on it increases load remains constant load on it decreases None of these load on it increases load remains constant load on it decreases ANSWER DOWNLOAD EXAMIANS APP
Transformers Primary winding of a transformer could either be a low voltage or high voltage winding is always a high voltage winding None of these is always a low voltage winding could either be a low voltage or high voltage winding is always a high voltage winding None of these is always a low voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Applied voltage and frequency are constant Iron core is used Leakage flux is small Losses are small Applied voltage and frequency are constant Iron core is used Leakage flux is small Losses are small ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same polarity same number of turns on the secondary side. same kVA rating same efficiency same polarity same number of turns on the secondary side. same kVA rating same efficiency ANSWER DOWNLOAD EXAMIANS APP
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