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
During O.C test obtained no load losses (core loss) During S.C. test obtained copper loss (load losses) during loaded condition of transformer copper loss more significant than core loss.
EXAMIANS