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TS EAMCET 20-July-2022 Shift 2 Solved Paper
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© examsnet.com
Question : 112
Total: 160
A generator produces a current of
100
A
at
4000
V
. The voltage is stepped up to
2
×
10
5
V
by a transformer before being sent on a high voltage transmission line of resistance
50
Ω
. The percentage of power loss in the transmission line is
0.25
%
0.05
%
1.25
%
0.02
%
Validate
Solution:
Given,
V
1
=
4000
V
,
I
1
=
100
A
,
V
2
=
2
×
10
5
V
I
2
=
?
Since,
‌
V
1
V
2
=
‌
I
2
I
1
⇒
‌
‌
I
2
=
‌
V
1
V
2
×
I
1
=
‌
4000
2
×
10
5
×
100
=
2
A
Input power to the transmission line,
P
i
=
V
2
I
2
=
2
×
10
5
×
2
=
4
×
10
5
W
Power loss in transmission line,
P
′
=
I
2
2
R
=
2
2
×
50
=
200
W
Percentage of power loss in transmission line,
‌
=
‌
P
′
P
i
×
100
%
‌
=
‌
200
4
×
10
5
×
100
%
=
‌
1
20
%
=
0.05
%
© examsnet.com
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