Members of each skill group held the. ball behind the head at some time in the preparatory phase of the. shot. One member of the high skill group used extreme hip and. knee flexion in the preliminary portion of the shot.
Transformer oil is either synthetic or minerals. Oil inside the transformer is act as a transfer media for heat transfer from HT and LT coils and circulate inside the transformer. Oil also provide insulation and protection to windings.
No, transformers require AC, they do not work as a transformer when a DC voltage is applied. When AC is applied the ratio of Current to voltage remains the same. So a Transformer which steps up voltage, steps down current. Likewise a Voltage step down transformer steps up current. The only change in power out is losses due to the fact that the materials are real.