Transformer Quiz

What is the primary function of a transformer?

• To increase or decrease voltage

• To store electrical energy

• To convert AC to DC

• To measure electrical resistance

In a transformer, what is the supply side known as?

• Secondary

• Primary

• Load

• Core

What type of core is used in core-type transformers to reduce eddy currents?

• Solid iron core

• Laminated core

• Copper core

• Aluminum core

What material is typically used for the core in core-type transformers?

• Soft iron

• Hard steel

• Copper

• Aluminum

What is the primary winding in a transformer?

• The winding connected to the load

• The winding connected to the supply

• The winding with fewer turns

• The winding with higher resistance

What is the secondary winding in a transformer?

• The winding connected to the supply

• The winding connected to the load

• The winding with more turns

• The winding with lower resistance

What are eddy currents?

• Large currents induced by mechanical movement

• Small currents induced into the core by the magnetic field

• Currents that flow in the opposite direction of the main current

• Currents that are induced by thermal energy

What is the main characteristic of shell-type transformers?

• They have a single winding

• Both windings wind onto the central leg of the transformer

• They have no core

• They use air as the core material

What does low coercivity in a material indicate?

• High resistance to magnetism

• Low resistance to magnetism

• High electrical resistance

• Low electrical resistance

What does the term "coercivity" refer to in magnetic materials?

• The ability to conduct electricity

• The resistance to changes in magnetism

• The ability to store electrical energy

• The resistance to thermal changes