Electrical Engineering - Transformers - Discussion

Discussion Forum : Transformers - General Questions (Q.No. 14)
14.
The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage?
2 V
20 V
180 V
18 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
27 comments Page 3 of 3.

Sriram said:   1 decade ago
@Rohinthh.

If the transformer ratio is given as 3:1 then it is n1:n2,

If the transformer Ratio is 3 or any other no. given as single digit then we have to consider n2:n1.

I think you're clear with my suggestion, have a wonderful day.

ROHINTHH said:   1 decade ago
How to decide that whether the turns ratio given is N2/N1 or N1/N2?

I thought N2/N1 = 3/1.

SO N2/N1 = E2/E1 = 3/1.

Hence E2 = 3*60 = 180V.

Please explain?

Rizwan B said:   1 decade ago
k=n2/n1.
n2=1.
n1=3.

Then v2/v1=n2/n1.

v2/60=1/3.
3v2=60.
v2=60/3.

v2=20.

Pranay said:   1 decade ago
Here,

Turn ratio = 3:1 means
n1 = 3, n2 = 1,
v1 = 60
Turn ratio = k = 3:1 = n1/n2 = v1/v2
so, v1 is 3 times higher than v2
v1 is 60 then v2 must be 20 = 60/3.

Gopi said:   1 decade ago
v1=60v
n2/n1=v2/v1
1/3=v2/60
.3333=v2/60
v2=.3333*60
v2=19.999

Rajasekhar said:   1 decade ago
Doubt:

v1=60v
n2/n1=3/1 ?

Can you please explain?

NITESH said:   1 decade ago
v1=60v
n2/n1=1/3
v2=?

v2/v1=n2/n1
v2=60/3
=20v


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