Block 2 - 3A - Transformers

A transformer consists of

• Metal Core

• Metal core and coiled wire

• Metal core and polymer wire

• Polymer core and metal wire

The insulation at the transformer's core is meant

• to avoid sharp edges.

• to avoid corrosion.

• to avoid electrical contact.

• to reduce power loss.

Primary loop is connected to the supply while secondary loop is connected to the load.

• True

• False

Step-up transformer is a transformer that increases...

• voltage.

• current.

• resistance.

• conductance.

Transformers are represented by...

• T

• Trans

• The Eversoft logo

• TM

The requirement for relative motion makes the transformer a ___ device

• AC

• DC

• AC/DC

• EC

The build up of current in the core is called...

• Eddy current loss

• Ed current loss

• Edd current loss

Transformers in audio/power frequency circuits have which type of core?

• Laminated iron

• Powered iron

• Air

• Iron ingot

Induction requires...

• A magnetic field

• Conductors

• Relative motion

What is voltage ratio?

• The primary voltage to secondary current

• The primary voltage to secondary voltage

• The primary watts to primary watts

• Thr primary current to secondary current