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Home  arrow Chapter 25  arrow Multiple Choice

Multiple Choice

Select the correct answer.

This activity contains 20 questions.

Question 1.
A source voltage is expressed as: e = 12 + 4 sin 3t. What is the dc component?

 
End of Question 1


Question 2.
What is the dc term of the Fourier series?

 
End of Question 2


Question 3.
You are measuring a square wave entering and leaving a low-pass filter, and you notice that the rise time and fall time have increased after the filter. Why?

 
End of Question 3


Question 4.
What are the restrictions on the sine and cosine terms of a Fourier series?

 
End of Question 4


Question 5.
How many terms are required to give a good approximation of a square wave?

 
End of Question 5


Question 6.
If the fundamental frequency is 8 MHz, what is the ninth harmonic?

 
End of Question 6


Question 7.
A Fourier series refers to a series of terms used to represent a nonsinusoidal periodic waveform. Of what terms is the series comprised?

 
End of Question 7


Question 8.
The Fourier series representation of a nonsinusoidal input can be applied to a linear network using what theorem?

 
End of Question 8


Question 9.
The Fourier series of a square wave has "ripple." What does the number of peaks represent?

 
End of Question 9


Question 10.
Under what condition can the Fourier series expression for the waveform resulting from the addition or subtraction of two nonsinusoidal waveforms be found using phasor algebra?

 
End of Question 10


Question 11.
Specify the symmetry of the following signal.

25problem11.gif

 
End of Question 11


Question 12.
Specify the symmetry of the following signal.

25problem12.gif

 
End of Question 12


Question 13.
What is the fundamental frequency of the signal in Problem 11?

 
End of Question 13


Question 14.
What is the period of the signal in Problem 12?

 
End of Question 14


Question 15.
What is the average value of the signal in Problem 12?

 
End of Question 15


Question 16.
What is the average value of the following signal?

25problem16.gif

 
End of Question 16


Question 17.
What is the symmetry of the signal in Problem 16?

 
End of Question 17


Question 18.
Which Fourier terms will be present in the signal of Problem 11?

 
End of Question 18


Question 19.
Which Fourier terms will be present in the signal of Problem 16?

 
End of Question 19


Question 20.
Which Fourier terms will be present in the signal of Problem 12?

 
End of Question 20





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