Transformers

Question 1

Name three types of transformers.

Answer 1

Any 3 of the following:
- Core construction single phase Transformers,
- Auto Transformers
- Power Transformers
- Distribution Transformers
- Instrument Transformers
- isolating Transformers

Question 2

What are the two types Core construction single phase transformers ( also called double sound transformers)

Answer 2

Core type - the coils are wound around both legs of the core
Shell type - the iron core surrounds the coil on both sides

Question 3

What is an Auto Transformer?

Answer 3

An Auto transformer has a single tapped coil serving as both primary and secondary.

Question 4

What is a Power Transformer?

Answer 4

Power transformers are used to step up or step down the voltage level.

Question 5

What is a Distribution Transformer?

Answer 5

A Distribution Transformer is used to step up or down the voltage level OF THE ELECTRICTY IN DISTRIBUTION SYSTEMS FOR HOUSES & BUSINESS PLACES

Question 6

What is an Instrument Transformer?

Answer 6

Transformers used to measure voltage and current in electrical system.

Question 7

What is an Isolating Transformer?

Answer 7

used to isolate electrical devices from the power source.

Question 8

What is the formula to calculate Transformer Efficiency?

Answer 8

output (kw) x copper losses (kw) + iron losses (kw)