Transformers

Transformers

Open Ended

Three things you can remember about transformers...

I'll accept one or two

Lego man video

Multiple Choice

Put the following the correct order?

i.Magnetic flux is created in the core

ii.The input circuit is switched on

iii.A voltage is induced in the secondary coil

iv.Current runs through the primary coil

• i, ii, iii, iv

• ii, iii, iv, i

• ii, i, iii, iv

• ii, i, iv, iii

Open Ended

Write down a list of physical things that you need to consider to optimise a transformer.

Hint - think of both types of circuit

Can you think of any problems???

Open Ended

The Primary coil of a transformer has 1200 turns and the secondary coil has 240 turns.

The Primary coil is connected to 110V, 50Hz.

Calculate the voltage across the secondary coil and state its frequency.