Question

A carrier wave V_c(t) = 160 sin(2π × 10⁶t) volts is made to vary between V_max = 200 V and V_min = 120 V by a message signal V_m(t) = A_m sin(2π × 10³t) volts. The peak voltage Am of the modulating signal is ______.

विकल्प

• 39

• 40

• 42

• 44

Answer 1

A carrier wave V_c(t) = 160 sin(2π × 10⁶t) volts is made to vary between V_max = 200 V and V_min = 120 V by a message signal V_m(t) = A_m sin(2π × 10³t) volts. The peak voltage Am of the modulating signal is 40.

Explanation:

Using the relation,

V_max = V_m + V_C

200 = V_M + 160

A_m = V_M = 40