Science - Transformers 2365-02

Front

Mutual Induction

Back

The process where two coils are placed in close proximity and an alternating current is passed through one of them.

Front

What is the primary function of a transformer?

Back

To step-up or step-down voltage and current

Front

What is a common characteristic of all transformers?

Back

They all operate in the same basic way.

Front

Which type of transformer is used to reduce voltage in a three-phase system?

Back

Three-phase pole-mounted step-down transformer

Front

What is the purpose of a laminated core in a transformer?

Back

To reduce energy losses

Front

What is generated within a coil when there is a changing magnetic field?

Back

Induced emf

Front

What is the practical application of mutual induction?

Back

Transformer

Front

What happens to the output voltage if there is an equal number of turns on both the primary and secondary windings in a transformer, assuming no losses?

Back

The output voltage will be equal to the input voltage.

Front

What happens to the voltage in the secondary winding when there are more turns on the primary winding?

Back

The voltage in the secondary winding decreases.

Front

What is the result of increased induction in each secondary turn from the excess primary turns?

Back

Increase in available current in the secondary.