Multiple choice

Let x(t) = 2 cos (800$\pi$t) + cos (1400$\pi$t). x(t) is sampled with the rectangular pulse train shown in figure. The only spectral components (in kHz) present in the sampled signal in the frequency range 2.5 kHz to 3.5 kHz are

  1. 2.7, 3.4

  2. 3.3, 3.6

  3. 2.6, 2.7, 3.3, 3.4, 3.6

  4. 2.7, 3.3
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D Correct answer
Explanation

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