Electrical Engineering - Transformers - Discussion

Discussion Forum : Transformers - General Questions (Q.No. 3)
3.
When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is
12 V
120 V
240 V
2,400 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
69 comments Page 4 of 7.

Praveen Nair said:   1 decade ago
N2/N1 = V2/V1 = I1/I2 = Turns ratio.

:. V2 = 20x12 = 240V.

Ravi chandra said:   1 decade ago
n2/n1 = v2/v1.

So n2/n1 is given = 20.

Primary voltage is given = 12v.

Here,
n2/n1 = v2/v1.

20 = v2/12.

v2 = 20*12.

v2 = 240.

Mahesh Bende said:   1 decade ago
V1/V2 = N1/N2.

Turns ratio=20 i.e. N2/N1 = 20.

Primary voltage = 12 Volt.

So, Secondary voltage V2 = V1*N2/N1.

= 12*20.

= 240 Volt.

Julymoe said:   1 decade ago
Turn = N.

Given, Turn Ratio=N2/N1=20 and Primary voltage=V1=12V.
Secondary voltage=V2=?

According to formula, N2/N1 = V1/V2.
V2 = (N2/N1)V1.
= 20*12.
= 240V.

Ranganath said:   1 decade ago
Its simple taking voltage turns ratio: V1/V2 = N1/N2.

Akash.bhure said:   1 decade ago
Solution:

Turns ratio(K) = 20.
Primary voltage = 12.
N2/N1 = V2/V1.
V2 = N2/N1*V1.
V2 = 20*12 = 240V.

Anand said:   1 decade ago
n2/n1 = v2/v1.
So n2/n1 is given = 20.

Primary voltage is given = 12v.

Here,

n2/n1 = v2/v1.
20 = v2/12.

v2 = 20*12.
v2 = 240.

Mohammad Talha Mansoor Alvi said:   1 decade ago
As N1/N2 = V2/V1.
AND Turns ratio = 20 & V1 = Primary voltage = 12.

While V2=Secondary voltage=? so above equation is used as,
20 = V2/12 &

20*12 = V2 SO V2 = 240V.

Mohan Kumar said:   1 decade ago
Turning ratio = n2/n1 = 20 .
Primary volt = 12v.
Sec. volt = ?

n2/n1 = v2/v1.
20 = v2/12.
v2 = 240v.

Abdul Rauf Ansari said:   1 decade ago
We know that:

Turn ratio of transformer is define as the ratio of turns of the wire in the primary winding to the number of turns of the wire in secondary winding.

i.e Turn ratio = N1/N2.

Given: N1/N2 = 20.

Primary side voltage V1= 12 volt.

Secondary voltage V2 = ?

Hence according to voltage transformation ratio.

V2/V1 = N2/N1 = I1/I2 = K.

Or, V2/V1 = N2/N1.
Or, V2 = N2/N1*V1.

= 1/20*12.
= 0.6 volt.


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