13. If y is the RMS value of f(x) in (0,21) then
23
(a + b}) is
4
(a) Ý (b) Y (cỹ (d) y
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Answers
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1
Answer:
Current i=
T
2i
o
t
Since, areas of i-t graph are equal but with opposite signs in first and second half cycle. So, net area is zero in full cycle.
Thus mean value of current is zero.
Mean value of square of current <i
2
>=
T
∫
0
T
i
2
dt
Or <i
2
>=
T
∫
0
T
(
T
2i
o
t)
2
dt
=
T
3
4i
o
2
∫
0
T
t
2
dt
Or <i
2
>=
T
3
4i
o
2
×
3
T
3
=
3
4i
o
2
Step-by-step explanation:
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