Power Supplies

Question 1

Name the different types of Transformers

Answer 1

•Step-down transformer
•Step-up transformer
•Centre-tap transformer
•Multiple-winding transformer
•Isolation transformer
•Auto-transformer, Variable transformer or Variac
•Power transformer
•Distribution transformer
•Instrument transformer
Potential or Voltage transformer
•Current transformer
•Audio frequency transformer

Question 2

What is the Application for Step-down transformer?

Answer 2

Used for electrical isolation, in a power distribution network, for controlling home appliances

Question 3

What is the Application for Step-up transformer?

Answer 3

used in transmission lines at the electrical power generating stations for transforming the high voltage produced by the alternator

Question 4

What is the Application for single-phase centre-tap transformer?