Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 24)
24.
A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 
. The load resistance as seen by the source is
. The load resistance as seen by the source is1.3
7.8
78
13
Discussion:
15 comments Page 1 of 2.
Durgaprasad said:
1 decade ago
K=N2/N1
K=6/1=6
R1=470
R2=R1/(K^2)
SO 470/36=13.06OHMS
K=6/1=6
R1=470
R2=R1/(K^2)
SO 470/36=13.06OHMS
(1)
Siva said:
1 decade ago
n1/n2=(r1/r2)^2
Darwin said:
1 decade ago
Given, N(pri):N(sec) = 1:6
R = 470 ohm
So, Relective Resistance = [(1/n)^2]*R = 470/36 = 13.055
Where, n = N(sec)/N(pri) = 6
R = 470 ohm
So, Relective Resistance = [(1/n)^2]*R = 470/36 = 13.055
Where, n = N(sec)/N(pri) = 6
Patil said:
1 decade ago
Is transformer ratio always N2/N1?
Kazi jasimuddin said:
10 years ago
If the relation between turns ratio and resistance is n1/n2=sqrt (r1/r2) then answer will be 78.
Basu patil said:
9 years ago
Thank you lot indiabix. Friends I have doubt, is transformer ratio is constant or not? because I have seen.
Two types i.e. N2/N1 And N1/N2. Which one is correct ? please clear my confusion.
Two types i.e. N2/N1 And N1/N2. Which one is correct ? please clear my confusion.
Sudhir said:
9 years ago
Zin or Zsource = ZL(load impedance)/n^2. Here n is turned ratio.
Susanta said:
9 years ago
Transformatio ratio(k) = N2/N1.
Turns ratio(n) = N1/N2.
therefore, n = 1/k.
Don't be confused between transformation ratio & turns ratio.
Turns ratio(n) = N1/N2.
therefore, n = 1/k.
Don't be confused between transformation ratio & turns ratio.
Kuna said:
9 years ago
The turn ratio n1/n2 =√ (r2/r1) = 13.
Lakshman rao said:
9 years ago
But they mentions turns ratio as 1:6.
We are taken turns ratio in transformer n2/n1.
So where n2 = 1 and n1 = 6.
Then what happen? Please explain.
We are taken turns ratio in transformer n2/n1.
So where n2 = 1 and n1 = 6.
Then what happen? Please explain.
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