TRANSFORMERS #1

Front

What is a transformer?

Back

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Front

What is the primary function of a step-up transformer?

Back

A step-up transformer increases voltage while decreasing current.

Tags

NGSS.HS-PS3-5

Front

What is the primary function of a step-down transformer?

Back

A step-down transformer decreases voltage while increasing current.

Front

What is the formula for transformer turns ratio?

Back

Turns ratio = Primary turns / Secondary turns.

Front

If the primary voltage is 120 VAC and the secondary voltage is 60 VAC, what is the turns ratio?

Back

The turns ratio is 2:1.

Front

What happens to current in a step-up transformer?

Back

Current decreases in a step-up transformer.

Front

What happens to current in a step-down transformer?

Back

Current increases in a step-down transformer.

Front

What could cause no voltage at the secondary side of a transformer?

Back

Possible causes include a bad secondary winding, a bad primary winding, or a bad fuse at the power supply.

Front

What is the relationship between voltage and current in transformers?

Back

In transformers, the product of voltage and current remains constant (Power = Voltage x Current).

Front

What is the voltage ratio in a transformer?

Back

Voltage ratio = Primary voltage / Secondary voltage.