Transformer Losses

Which one of the following is not a loss from a transformer?

• Copper Loss

• Eddy current loss

• Weight loss

• Hysteresis loss

What effect don't we want from a transformer

• Heating

• Magnetic

• Induction

• Mutual coupling

What does an Eddy current produce?

• Increase in frequency

• Heating of the windings

• Heating of the core

• Increase in the secondary current

How are eddy currents reduced in a transformer?

• By using a plastic material for the core

• Making the core bigger

• Splitting the core in to strips and sticking them back together with another conductor

• Splitting the core in to strips and sticking them back together with an insulator

What is the hysteresis loss dependant upon?

• The type of material in the core and the frequency of the supply

• The frequency of the supply only

• Eddy currents

• The type of material and the secondary flux

How many times a second does the supply alternate?

• 10

• 500

• 100

• 50

What is produced as the A>C. waveform goes though it's cycle?

• Copper loss

• Eddy current loss

• Leakage

• Hysteresis loss

Fringing occurs where there are......

• Doughnut shapes

• Circular edges

• Angled edges

• Hollow cores

Copper losses are related to...

• Frequency of the supply

• Primary windings only

• Secondary windings only

• Current flowing though both windings