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Physics
Physics
Problem
A signal
A
cos
ω
t
A \cos \omega t
A
cos
ω
t
is transmitted using
v
0
sin
ω
0
t
v_0 \sin \omega_0 t
v
0
sin
ω
0
t
as carrier wave. The correct amplitude modulated (AM) signal is: a.
v
0
sin
ω
0
t
+
A
2
sin
(
ω
0
−
ω
)
t
+
A
2
sin
(
ω
0
+
ω
)
t
v_0 \sin \omega_0 t + \frac{A}{2} \sin(\omega_0 - \omega)t + \frac{A}{2} \sin(\omega_0 + \omega)t
v
0
sin
ω
0
t
+
2
A
sin
(
ω
0
−
ω
)
t
+
2
A
sin
(
ω
0
+
ω
)
t
b.
v
0
sin
[
ω
0
(
1
+
0.01
A
sin
ω
t
)
t
]
v_0 \sin[\omega_0(1 + 0.01 A \sin \omega t)t]
v
0
sin
[
ω
0
(
1
+
0.01
A
sin
ω
t
)
t
]
c.
v
0
sin
ω
0
t
+
A
cos
ω
t
v_0 \sin \omega_0 t + A \cos \omega t
v
0
sin
ω
0
t
+
A
cos
ω
t
d.
(
v
0
+
A
)
cos
ω
t
sin
ω
0
t
(v_0 + A) \cos \omega t \sin \omega_0 t
(
v
0
+
A
)
cos
ω
t
sin
ω
0
t
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