An amplitude modulated waves is represented by expression vm = 5 (1 + 0.6 cos 6280t) sin(211 × 104 t) volts. The minimum and maximum amplitudes of the amplitude-modulated wave are, respectively: (1) 5V, 8V (2) 5/2V, 8V (3) 3V, 5V (4) 3/2V, 5V

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An amplitude modulated waves is represented by expression vm = 5 (1 + 0.6 cos 6280t) sin(211 × 10^4 t) volts.

Physics

Last Post by nikhil04 5 years ago

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16/09/2020 5:11 pm

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aditi07

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An amplitude modulated waves is represented by expression v_m = 5 (1 + 0.6 cos 6280t) sin(211 × 10⁴ t) volts. The minimum and maximum amplitudes of the amplitude-modulated wave are, respectively:

(1) 5V, 8V

(2) 5/2V, 8V

(3) 3V, 5V

(4) 3/2V, 5V

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1 Answer

16/09/2020 5:19 pm

nikhil04

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Correct answer: (2) 5/2V, 8V

Explanation:

From Given Equation

μ = 0.6

A_m = μAc

A_max+ A_min/2 = Ac = 5 .....(1)

A_max - A_min/2 = 3 .....(2)

From Equation (1) + (2)

A_max= 8

From Equation (1) – (2)

A_min= 2

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An amplitude modulated waves is represented by expression vm = 5 (1 + 0.6 cos 6280t) sin(211 × 10^4 t) volts.

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