In AM, the centpercent modulation is achieved when Options: A . &nbsp Carrier amplitude = signal amplitude B . &nbsp C a r r i e r a m p l i t u d e − 1 = signal amplitude C . &nbsp Carrier frequency = signal frequency D . &nbsp C a r r i e r f r e q u e n c y − 1 = signal frequency E . &nbsp The frequency of modulated wave varies as frequency of carrier wave

In AM, the centpercent modulation is achieved when

Discussion Forum : Communication Systems

Question -

In AM, the centpercent modulation is achieved when

Options:

A . Carrier amplitude = signal amplitude

B .

{C a r r i e r a m p l i t u d e}^{- 1}

= signal amplitude

C . Carrier frequency = signal frequency

D .

{C a r r i e r f r e q u e n c y}^{- 1}

= signal frequency

E . The frequency of modulated wave varies as frequency of carrier wave

Answer: Option A
:
A

When signal amplitude is qual to the carrier amplitude, the amplitude of carrier ware varies between 2A and zero.

$m_{a} = \frac{A m p l i t u d e c h a r g e o f c a r r i e r}{A m p l i t u d e o f n o r m a l c a r r i e r} = \frac{2 A - A}{A} \times 100$ = 100%

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