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.
Transformers often have silicon steel cores to channel the magnetic field. This keeps the field more concentrated around the wires, so that the transformer is more compact. The core of a power transformer must be designed so that it does not reach magnetic saturation.