An amplitude modulated signal is plotted below:-

Which one of the following best describes the above signal?

a.

(9 + sin (2.5× 10⁵ t)) sin (2 × 10⁴t)V

b.

(9 + sin (4 × 10⁴ t)) sin (5 × 10⁵t)V

c.

(1 +9 sin (2 × 10⁴ t)) sin (2.5 × 10⁵t)V

d.

(9 + sin (2 ×10⁴ t)) sin (2.5 × 10⁵t)V

Question

Updated On April 24, 2024 at 11:35am
| SaraNextGen Answer

An amplitude modulated signal is plotted below:-

Which one of the following best describes the above signal?

a.

(9 + sin (2.5× 10⁵ t)) sin (2 × 10⁴t)V

b.

(9 + sin (4 × 10⁴ t)) sin (5 × 10⁵t)V

c.

(1 +9 sin (2 × 10⁴ t)) sin (2.5 × 10⁵t)V

d.

(9 + sin (2 ×10⁴ t)) sin (2.5 × 10⁵t)V

Question ID - 50354 | SaraNextGen Answer
An amplitude modulated signal is plotted below:-

Which one of the following best describes the above signal?

a.

(9 + sin (2.5× 10⁵ t)) sin (2 × 10⁴t)V

b.

(9 + sin (4 × 10⁴ t)) sin (5 × 10⁵t)V

c.

(1 +9 sin (2 × 10⁴ t)) sin (2.5 × 10⁵t)V

d.

(9 + sin (2 ×10⁴ t)) sin (2.5 × 10⁵t)V

1 Answer - 5876 Votes

**By | SaraNextGen Answer** · Accepted Answer

Answer Key : (d) -

Analysis of graph says

(1) Amplitude varies as 8 − 10 V or 9 ± 1

(2) Two time period as 100 s (signal wave) & 8 s (carrier wave)

Hence signal is

=9⁴t) sin 2.5 x 10 ⁵t

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a.	(9 + sin (2.5× 10⁵ t)) sin (2 × 10⁴t)V	b.	(9 + sin (4 × 10⁴ t)) sin (5 × 10⁵t)V
c.	(1 +9 sin (2 × 10⁴ t)) sin (2.5 × 10⁵t)V	d.	(9 + sin (2 ×10⁴ t)) sin (2.5 × 10⁵t)V

An amplitude modulated signal is plotted below:- Which one of the following best describes the above signal? a. (9 + sin (2.5× 105 t)) sin (2 × 104t)V b. (9 + sin (4 × 104 t)) sin (5 × 105t)V c. (1 +9 sin (2 × 104 t)) sin (2.5 × 105t)V d. (9 + sin (2 ×104 t)) sin (2.5 × 105t)V