Transformer

A __________ is an electrical device that converts AC electricity from one voltage level to another

• transformer

• primary coil

• secondary coil

• center tap

The transformer shown is what type?

• step-up

• step-down

• current transformer

• isolation transformer

A transformer has primary voltage 200V and secondary voltage 100V , the transformer is called _______ .

• Step up

• Step Down

• None

Tags

NGSS.HS-PS3-3

A step-up transformer is a transformer that ​ (a)   voltage.

• increases

• decreases

A step-down transformer is a transformer that ​ (a)   voltage.​

• decreases

• increases

For increasing the voltage ___________ is used.

• Step up transformer

• Step down transformer

• Current transformer

The voltage in the ​ (a)   coil of a transformer induces a current in the ​​ (b)   coil.

• primary

• secondary

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Calculate voltage in the secondary coil based on the information given below. Vp = 240 V Np = 20 Ns = 125 Vs ?

This picture is an example of a ________________.

Tags

NGSS.HS-PS3-3

In a transformer, the input power is __________ the output power.

• less than

• equal to

• greater than