
Discrete Fourier Transform-Online Quiz 1
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Education
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University
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Practice Problem
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Hard
Devika Thiyagarajan
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Given that W=e-i(2π/N) , where N=3. Then F=WN can be computed as F=
0
1
-1
e
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Given that W=e-i(2π/N) , where N=3. Then F=W(N/2) can be computed as F=
0
1
-1
e
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following relations are true if x(n) is real?
X(ω)=X(-ω)
X(ω)=-X(-ω)
X*(ω)=X(ω)
X*(ω)=X(-ω)
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
The time system which operates with a continuous time signal and produces a continuous time output signal is
CTF system
DTF System
Time invariant System
Time variant System
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
DFT is applied to
Infinite sequences
Finite discrete sequences
Continuous infinite signals
Continuous finite sequences
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The circular convolution of two sequences in time domain is equivalent to
Multiplication of DFTs of two sequences
Summation of DFTs of two sequences
Difference of DFTs of two sequences
Square of multiplication of DFTs of two sequences
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The basic properties of DFT includes
1)Linearity
2) Periodicity
3) Circular symmetry
4) Summation
1, 2 and 3 are correct
1, 2 and 4 are correct
1 and 3 are correct
All the four are correct
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