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
Discussion:
69 comments Page 3 of 7.
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.
So n2/n1 is given = 20.
Primary voltage is given = 12v.
Here,
n2/n1 = v2/v1.
20 = v2/12.
v2 = 20*12.
v2 = 240.
Ranganath said:
1 decade ago
Its simple taking voltage turns ratio: V1/V2 = N1/N2.
MAC FRANCIS said:
1 decade ago
VS/VP = TS/TP.
VS = VP*20.
VS = 12*20.
VS = 120 V.
VS = VP*20.
VS = 12*20.
VS = 120 V.
Er. Vikash said:
10 years ago
If you don't know the correct answer. Please don't explain. There is a mistake in options.
Above most of given explanation that is wrong correct answer is V1/V2 = E1/E2 = Turn ratio.
i.e 12/v2 = 20 so v2 = 12/20 = 0.6.
Above most of given explanation that is wrong correct answer is V1/V2 = E1/E2 = Turn ratio.
i.e 12/v2 = 20 so v2 = 12/20 = 0.6.
Prasenjit patra said:
10 years ago
V2/V1 = K;
So V2/12 = 20 then V2 = 240 (answer) where v2 is secondary voltage, v1 is primary voltage, k is transformer ratio.
So V2/12 = 20 then V2 = 240 (answer) where v2 is secondary voltage, v1 is primary voltage, k is transformer ratio.
SHARAD PAWAR said:
10 years ago
Turns ratio is means N1/N2 and transformation ratio is N2/N1 but here turns ratio is given 20.
It means N1/N2 = 20. And primary voltage (V1) = 12 V.
Also, N1/N2 = V1/V2.
So, 20/1 = 12/V2.
Hence V2 = 0.6 V.
It means N1/N2 = 20. And primary voltage (V1) = 12 V.
Also, N1/N2 = V1/V2.
So, 20/1 = 12/V2.
Hence V2 = 0.6 V.
Dkp said:
9 years ago
Turns ratio a = v1/v2 = e1/e2 = t1/t2.
where a = 20, v1 = 12.
Substitute the value
20 = 12/v2.
Then, v2 = 12/20 = 0.6v => Answer.
where a = 20, v1 = 12.
Substitute the value
20 = 12/v2.
Then, v2 = 12/20 = 0.6v => Answer.
G SHIVA KUMAR said:
9 years ago
K = E2/E1 = V2/V1 = R2/R1 = I1/I2.
SO, K = SECONDARY VOLTAGE VALUE/PRIMARY VOLTAGE VALUE.
K = V2/V1.
Given data:
K = 20.
V1 = 12 VOLTS.
V2 = ?
K = V2/V1.
20 = V2/12.
V2 = 20*12 = 240A.
SO, K = SECONDARY VOLTAGE VALUE/PRIMARY VOLTAGE VALUE.
K = V2/V1.
Given data:
K = 20.
V1 = 12 VOLTS.
V2 = ?
K = V2/V1.
20 = V2/12.
V2 = 20*12 = 240A.
Kalendra said:
9 years ago
Very simple.
v2 = v1*turn ratio.
So, the answer is 240 V.
v2 = v1*turn ratio.
So, the answer is 240 V.
Shujaa Rheem said:
9 years ago
The correct answer 0.6 not 240 because the turn ratio high so n1 high that lead the transformer step_down.
So the secondary voltage less than from the primary n1/n1 = 20 that represent simple k then k = v1/v2 then 20 = 12/v2 so v2 = 12/20 = 0.6.
So the secondary voltage less than from the primary n1/n1 = 20 that represent simple k then k = v1/v2 then 20 = 12/v2 so v2 = 12/20 = 0.6.
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