1Which other devices need a transformer? How would you collect the voltage ratings of a router adaptor and a laptop adaptor?
2What is a transformer? Give one example of a transformer that lowers voltage and one that raises it.
3Why are transformers needed at power houses and at substations?
4Describe the construction of a transformer.
5What is core lamination? Why is the core of a transformer laminated?
6What is mutual induction? How does a transformer work by it?
7Why can a transformer not change the voltage of direct current?
8Differentiate between the primary coil and the secondary coil.
9Why is insulated copper wire used to make the coils of a transformer?