
SIGNAL THEORY
Authored by Maurizio Ventre
Information Technology (IT)
University

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13 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is the Fourier Transform used for?
Time-domain analysis
Frequency-domain analysis
Signal amplification
Signal filtering
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is the unit of frequency?
Volt
Ampere
Hertz
Ohm
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is the main purpose of signal modulation?
Signal amplification
Signal transmission
Signal filtering
Signal storage
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What does the impulse response of a system describe?
Response to a high voltage discharge
System output to a very short input
System gain
System phase
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is the definition of signal bandwidth?
Signal amplitude
Signal duration
Range of frequencies
Signal power
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Which theorem ensures perfect recovery if the sampling frequency exceeds twice the maximum signal frequency?
Convolution Theorem
Finite Rate of Innovation
Shannon–Nyquist Sampling Theorem
Modulation Theorem
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
A periodic signal is expressed as a sum of sinusoids. This representation is called:
Fourier Transform
Laplace Transform
Fourier Series
Trigonometric Series
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