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 5 of 7.
Jatin said:
1 decade ago
Yes 0.6 is the right answer because we must follow the transformation rule. That is n1/n2=v1/v2=i2/i1=k.
Than 240 is wrong answer.
Than 240 is wrong answer.
Lauren said:
1 decade ago
On my research:
Turn Ratio = Vpri/Vsec = Npri/Nsec.
Transformation Ratio = Vsec/Vpri.
Please verify the formula.
Turn Ratio = Vpri/Vsec = Npri/Nsec.
Transformation Ratio = Vsec/Vpri.
Please verify the formula.
Nirupam said:
1 decade ago
Turn ratio = T1/T2, this is always put in order input : output, which is primary : secondary.
And T1/T2 = V1/V2 = 20.
Or, 12/V2 = 20.
Hence V2 = 12/20 = 0.6 volt.
And T1/T2 = V1/V2 = 20.
Or, 12/V2 = 20.
Hence V2 = 12/20 = 0.6 volt.
KIRAN .,SURESH said:
1 decade ago
Given that N2/N1 = 20.
V1 = 12.
V2/V1 = N2/N1 = 20.
So V2 = 20*V1.
= 20*12.
= 240.
V1 = 12.
V2/V1 = N2/N1 = 20.
So V2 = 20*V1.
= 20*12.
= 240.
PREM PRAKASH KNIT SULTANPUR said:
1 decade ago
v1/v2 =1/k.
12/v2 = 1/20.
v2 = 240v.
12/v2 = 1/20.
v2 = 240v.
DEEPAK said:
1 decade ago
0.6 is the correct answers.
Because turns ration is (v1/v2) = (t1/t2) and it is given (t1/t2) = 20 and v1 = 12. So the answer v2 = (12/20).
Because turns ration is (v1/v2) = (t1/t2) and it is given (t1/t2) = 20 and v1 = 12. So the answer v2 = (12/20).
Mahmoud said:
1 decade ago
n1/n2 = v1/v2.
20 = 12/v2.
v2 = 12/20 = 0.6 v.
20 = 12/v2.
v2 = 12/20 = 0.6 v.
Anand said:
1 decade ago
Actually turn ratio of transformer is given by n1/n2.
Therefore if turn ratio is 20 then the answer is 12/20. There is some mistake in the question.
Therefore if turn ratio is 20 then the answer is 12/20. There is some mistake in the question.
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.
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