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 2 of 2.
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.
Patil said:
1 decade ago
Is transformer ratio always N2/N1?
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
Siva said:
1 decade ago
n1/n2=(r1/r2)^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)
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