Electrical Engineering - Transformers - Discussion

Discussion Forum : Transformers - General Questions (Q.No. 17)
17.
A transformer
changes ac to dc
changes dc to ac
steps up or down dc voltages
steps up or down ac voltages
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
23 comments Page 1 of 3.

Ziembo Ignatius Dery said:   1 year ago
The transformer only changes from one AC voltage level to another AC voltage level whilst maintaining the apparent power.

Sharmela said:   8 years ago
What will happened if the secondary transformer is zero?
(1)

Kingsley said:   8 years ago
Transformer works only on AC supply.
(1)

Gambiza. A said:   9 years ago
A transformer is power alternating device. Works only AC supply.

Ramchandra ladkat said:   9 years ago
Because transformer work only AC supply.

Ranjith said:   9 years ago
Because DC supply have no frequency.

Murali1990 said:   10 years ago
Transformer does not change ac to dc because it is not a converter therefore transformer step up or step down the voltage.

Mandar said:   1 decade ago
Is it possible to starts the lamps without using a power supply?

Sakaria said:   1 decade ago
What about a forward converter, where you have a transformer to step up and down a dc voltage.

Karthik said:   1 decade ago
May I know transformer is a voltage controlled or current controlled device?


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