Multiple choice

Directions: Carry One Mark Each.

The magnitude and phase of the complex Fourier series coefficients ak of a periodic signal x(t) are shown in the figure. Choose the correct answer from the given options.

Notation: C is the set of complex numbers, R is the set of purely real numbers and P is the set of purely imaginary numbers.

  1. x(t) $\epsilon$ R
  2. x(t) $\epsilon$ P
  3. x(t) $\epsilon$ (C – R)

  4. The information given is not sufficient to draw any conclusion about x(t).
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As the magnitude spectrum is even, the corresponding time-domain signal is a real signal.

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