Electrical Engineering - Transformers - Discussion

Discussion Forum : Transformers - General Questions (Q.No. 5)
5.
A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is
0.2
0.4
5
25
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
94 comments Page 9 of 10.

Andy said:   1 decade ago
Turn ratio = n = vp/vs.
400/2000 = 0.2.

Halwar Dattatray said:   1 decade ago
n2 = 2000.
n1 = 400.

We know,

k = n2/n1.
k = 2000/400.
k = 5.

Manikya singh said:   1 decade ago
N2/N1 = 2000/400 = 5/1.

So answer is 5.

TVSPRASAD said:   1 decade ago
Turns ratio=n2/n1,
so N2/N1=2000/40=5

MADAN PADMERE said:   1 decade ago
No.of turns in the primary (N1) = 400.

No.of turns in the secondary(N2) = 2000.

Turns ratio = N2/N1 = 2000/400 = 5.

Akash.bhure said:   1 decade ago
Solution:

No.of turns in the primary (N1) = 400.
No.of turns in the secondary (N2) = 2000.
Turns ratio(K) = N2/N1 = 2000/400 = 5.

Atul kumar said:   1 decade ago
Wrong. Because turns ratio is opposite to transformation ratio. Turns ratio = N1/N2 whereas N2/N1 is transformation Ratio.

Lalu Prasad Yadav said:   1 decade ago
Transformer ratio is the ratio of avg. Of all turns ratio taken as sample of interval with 10 min in standard temperature, time and pressure. While length is always in ratio of velocity of square of light.

Ok. Got it?

Bhairesh said:   1 decade ago
What is the definition for transformer ratio and turns ratio?

Bibash said:   1 decade ago
This is all wrong turns ratio is N1/N2. So the answer is 0.2.


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