1.

An amplitude modulated signal is plotted belowWhich one of the following best describes the above signal?

A. [1 + 9 sin (2π × 104 t)] sin (2.5π × 105 t) V
B. [9 + sin (2π × 104 t)] sin (2.5π × 105 t) V
C. [9 + sin (4π × 104 t)] sin (5π × 105 t) V
D. [9 + sin (2.5π × 105 t)] sin (2π × 104t) V
Answer» C. [9 + sin (4π × 104 t)] sin (5π × 105 t) V


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