Electrical Engineering - Transformers - Discussion

Discussion Forum : Transformers - General Questions (Q.No. 24)
24.
A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is
1.3
7.8
78
13
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
15 comments Page 2 of 2.

Susanta said:   9 years ago
Transformatio ratio(k) = N2/N1.
Turns ratio(n) = N1/N2.
therefore, n = 1/k.

Don't be confused between transformation ratio & turns ratio.

Kuna said:   9 years ago
The turn ratio n1/n2 =√ (r2/r1) = 13.

Lakshman rao said:   9 years ago
But they mentions turns ratio as 1:6.
We are taken turns ratio in transformer n2/n1.
So where n2 = 1 and n1 = 6.
Then what happen? Please explain.

Sai kumar said:   8 years ago
@Lakshman Rao.

That is transformation ratio = k.
Turns ratio = N1/N2.
Transformation ratio N2/N1 = k.

Syed muzammil said:   5 years ago
As we know that R1 = k^2 * R2.
R1 = 670/36 = 13.


Post your comments here:

Your comments will be displayed after verification.