The given transformer is step up transformer because secondary turns are more than primary turns.
A transformer converts alternating current (AC) from one voltage to another voltage. It has no moving parts and works on a magnetic induction principle; it can be designed to "step-up" or "step-down" voltage. So a step up transformer increases the voltage and a step down transformer decreases the voltage.
- Use a large steel bolt as the transformer's magnetic core. ...
- Wrap the bolt with insulating tape to isolate the windings from the “core”. ...
- Wind the two copper wires several times (at least 12 turns) around the ends of the “core” (steel bolt).
we can use step down transformer as a step up transformer. For doing this we have to change the winding of the transformer means replace secondary winding as primary winding and primary winding as secondary winding.a step-up transformer is used to increase the voltage and reduce the current. ... Less current means less energy is lost through heating the wire. To keep people safe from these high voltage wires, pylons are used to support transmission lines above the ground. If they are not equal, then either you are losing energy in the transformer (inefficiencies), or gaining energy (perpetual motion anyone?!). The former can happen, the latter can't. So that means that the voltage will be increased by a factor of 5 (Vout=5×Vin)