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Byju's Answer
Standard XIII
Physics
Mean Value
If an ac main...
Question
If an ac main supply is given to be 220 V. What would be the average e.m.f. during a positive half cycle
A
198V
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B
386V
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C
256V
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D
None of these
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Solution
The correct option is
A
198V
V
a
v
=
2
π
V
0
=
2
π
×
(
V
r
m
s
×
√
2
)
=
2
√
2
π
.
V
r
m
s
=
2
√
2
π
×
220
=
198
V
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