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CGPET 2015 Solved Paper
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© examsnet.com
Question : 34
Total: 150
A transformer has 200 turns in primary and 150 turns in secondary. If the operating voltage at the load connected to the secondary is measured to be
300
V
, the voltage supplied at the primary is
230
V
400
V
480
V
660
V
Validate
Solution:
For the transformer shown in the figure, we can write
E
1
E
2
=
N
1
N
2
⇒
E
1
300
=
200
150
⇒
E
1
=
400
V
.
© examsnet.com
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