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 3 of 11.
Md.mofiz said:
1 decade ago
Why the tranformer rating in kva?
(1)
Naresh said:
1 decade ago
Is this process aplicable for all turns ratio problems?
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.
PALIVELA VARAPRASAD said:
1 decade ago
v1xi1=v2i2
v1=cxn1
v2=cxn2
i1=v1/r1
i2=v2/r2
so
(n2/n1)2=(r2/r1)
Hence turns ratio n2/n1=root(4)=2
v1=cxn1
v2=cxn2
i1=v1/r1
i2=v2/r2
so
(n2/n1)2=(r2/r1)
Hence turns ratio n2/n1=root(4)=2
Dillip kumar dehury said:
1 decade ago
Is any technique to know the KVA rating of transformer without nameplate?
Dillip kumar dehury said:
1 decade ago
Why the iron loss is neglected during cu.loss test?
(1)
Siri said:
1 decade ago
Cu losses does not depends on voltage, iron losses depends on voltage and Cu losses depends on current moreover power factor of t/f depends on load hence rated in kva where as in motors power factor depends only on construction hence rated in kw.
Navdeep Saini said:
1 decade ago
Power is constant in both sides
I1sq*R1=I2sq*R2
Turn ratio=I1/I2=sqroot(R2/R1)=2
I1sq*R1=I2sq*R2
Turn ratio=I1/I2=sqroot(R2/R1)=2
Venkatesh S said:
1 decade ago
In question we understood that we convert the 320 ohm resistance in secondary as 80 ohm in the primary side (means source side). r'2 is 80, r2 is 320. Turns ratio is K.
r'2= (r2/K^2).
So that k=sqrt of (320/80).
K=2.
r'2= (r2/K^2).
So that k=sqrt of (320/80).
K=2.
Keerthi said:
1 decade ago
The Turns Ratio is always proportional to the square root of the load.
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