1) THE SECONDARY WINDING of a transformer is connected to the LOAD RESISTANCE..WHILE
2) the PRIMARY winding RECEIVES energy.
3) A STEP-DOWN transformer DECREASES the primary voltage WHILE
4) an AIR core transformer is used for HIGHT-frequency currents.
5) In a STEP-UP transformer the number of turns of the secondary winding
is greater, WHILE the number of turns of the PRIMARY winding is less.