Unit 262 TRANSFORMER QUIZ

What is the primary function of a transformer?

• To convert direct current to alternating current

• To convert one alternating voltage to another at the same frequency through mutual induction

• To store electrical energy for later use

• To reduce the flow of electric current

What establishes a flux in a transformer that links the other winding and induces a voltage in it?

• The magnetic field

• The electrical connection

• Alternating current in one winding

• The primary winding

Which winding of a transformer is connected to the power supply?

• Secondary

• Tertiary

• Primary

• Auxiliary

How does power flow from one circuit to another in a transformer?

• Through a direct electrical connection

• Via a mechanical switch

• Via magnetic field, with no electrical connection

• Through a physical linkage

What is the function of the iron core in a basic iron-core transformer as shown in the diagram?

• To decrease the magnetic field

• To increase electrical resistance

• To conduct heat away from the windings

• To concentrate and guide the magnetic field

In the diagram of the basic iron-core transformer, what is the role of the copper wire?

• To insulate the core

• To carry the electrical current

• To support the structure

• To reduce voltage directly

According to the diagram, what is the purpose of the secondary winding in a transformer?

• To generate the initial magnetic field

• To convert the magnetic field back to electrical energy

• To store excess electricity

• To control the input current

What are the two broad categories of transformer construction mentioned in the material?

• Primary-core and Secondary-core construction

• Iron-core and Air-core construction

• Solid-core and Hollow-core construction

• Electric-core and Magnetic-core construction

What is the purpose of using iron-cores in transformers?

• To reduce the electrical resistance

• To increase the electrical output

• To increase the coupling between coils by providing an easy path for magnetic flux

• To decrease the weight of the transformer

Iron-core transformers are divided into which two structural types?

• Core type and Shell type

• Base type and Cap type

• Ring type and Pin type

• Block type and Frame type