GETCO Exam Paper (30-11-2008)
When a star delta transformer bank of three single phase transformers is to be used for step down transformation with line voltages of 23000 V and 2300 V, the ratio of transformation will be
Function of breather is to extract moisture from air going into the conservator. it is small container filled with silica gel. silica gel in breather will be blue colour when installed silica gel turn into pink colour when absorb moisture.
EXAMIANS