Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 2)
2.
The turns ratio required to match an 80 
source to a 320 load is
source to a 320 load isDiscussion:
101 comments Page 4 of 11.
Pal said:
1 decade ago
N(s)/N(p) = E(S)/E(p)-1.
I(p) N(p) = I(s) N(p).
E(P) N(P) / R(P) = E(S) N(S)/R(S)-2.
From 1 and 2.
Sq (N(S)/N(P)) = R(s)/R(p).
I(p) N(p) = I(s) N(p).
E(P) N(P) / R(P) = E(S) N(S)/R(S)-2.
From 1 and 2.
Sq (N(S)/N(P)) = R(s)/R(p).
Satya said:
1 decade ago
As in a transformer input power = output power i.e. energy is transformed, v1^2 / z1 = v2^2 /z2. hence turns ratio = sqrt(z2/z1)
Akash.bhure said:
1 decade ago
Source resistance(R1) = 80 ohms.
Load resistance(R2) = 320 ohms.
R1 = R2/K^2.
80 = 320/K^2.
K^2 = 320/80 = 4.
K = sqrt(4) = 2.
Load resistance(R2) = 320 ohms.
R1 = R2/K^2.
80 = 320/K^2.
K^2 = 320/80 = 4.
K = sqrt(4) = 2.
K.Gopalakrishna said:
9 years ago
Transformation ratio k = n2/n1.
Here the given value is in ohms i.e resistive.
That will be more in the winding.
i.e 320/8 = 4.
Here the given value is in ohms i.e resistive.
That will be more in the winding.
i.e 320/8 = 4.
PABAN said:
1 decade ago
We know in ideal Transformer v2/v1 = i1/i2 = k.
v2/v1 = (v1/r1)*(r2/v2).
(v2/v1)^2 = r2/r1.
After calculation result is 2.
v2/v1 = (v1/r1)*(r2/v2).
(v2/v1)^2 = r2/r1.
After calculation result is 2.
Uma said:
1 decade ago
Turns ratio is directly proportional to square root of load impedance to source impedance i.e., here, sq root of 320/80=2.
Siva said:
1 decade ago
Transformer rating is in kVA because Cu loss depends on only voltage and current and it is independent of power factor.
Prafulla said:
8 years ago
If primary Resistance transfer to the secondary winding. Then,
R2=K^2 R1.
320=K^2 80,
K^2=320/80 = 4.
K= √4 = 2.
R2=K^2 R1.
320=K^2 80,
K^2=320/80 = 4.
K= √4 = 2.
Ranjeet singh said:
1 decade ago
v2/v1 = i1/i2.
= v1/r1*r2/v2.
(v2/v1)^2 = r2/r1.
(k)^2 = r2/r1.
k^2 = 320/80.
k^2 = 4 .
k = 2.
= v1/r1*r2/v2.
(v2/v1)^2 = r2/r1.
(k)^2 = r2/r1.
k^2 = 320/80.
k^2 = 4 .
k = 2.
Hritiks said:
3 years ago
v1*i1 = v2 * i2.
V1^2/ R1 = V2^2/R2.
V2^2 / V1^2 = R2/R1.
(k)^2 = r2/r1.
k^2 = 320/80.
k^2 = 4 .
k = 2.
V1^2/ R1 = V2^2/R2.
V2^2 / V1^2 = R2/R1.
(k)^2 = r2/r1.
k^2 = 320/80.
k^2 = 4 .
k = 2.
(21)
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