Question

Consider the time domain waveforms below on the left. Match waveforms (a) - (e) to their respective frequency spectrum representation on the right. Which frequency spectrum matches waveform a? Put the number only in the space. _____
Which frequency spectrum matches b? Put the number only in the space. _____
Which frequency spectrum matches c? Put the number only in the space. _____
Which frequency spectrum matches d? Put the number only in the space. _____
Which frequency spectrum matches e? Put the number only in the space. _____

Answer 1

Answer:

(a) ------(3). (b)------(1) (c)-----(5) (d)------(2) ------ (e) -----4

Note: Kindly find an attached copy of the diagram associated with the solution to the question below.

Sources: the diagram to this question was researched from Quizlet

Explanation:

Solution

(1) Part (a)a waveform has a high frequency components compared to another waveform. the corresponding frequency components should be high.

So for the wave form a  the corresponding frequency spectrum is (3)

(2) For part (b), waveform has three harmonics, the corresponding frequency spectrum is (1)

(3) The time domain waveform plot (c) is a sine wave but there exists a dc component.

Thus x[0] ≠0

For (c) the corresponding frequency spectrum is (5)

(4) For part (d) the corresponding frequency spectrum is (2)

(5) A sine wave is made of a single frequency only and its spectrum is a single point

For (e) the corresponding frequency spectrum is (4)