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GATE 2025 Signals & Systems Foundation Quiz 30
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Question 1
Consider the signal given below:
If X(ejω) is the discrete Fourier transform of x[n], then the value of is_________.
Question 2
In the z-transform the first difference property is given as
Where
is z-transform of
If the ROC of
is say R, then the ROC of the first difference will be
![](https://gradeup-question-images.grdp.co/liveData/PROJ632/147564932303114.png)
Where
![](https://gradeup-question-images.grdp.co/liveData/PROJ632/1475649323807911.png)
![](https://gradeup-question-images.grdp.co/liveData/PROJ632/1475649324637243.png)
If the ROC of
![](https://gradeup-question-images.grdp.co/liveData/PROJ632/147564932537737.png)
Question 3
If DFT of x(n) is
, then DFT of x(n – 2) is:
![](https://gradeup-question-images.grdp.co/liveData/PROJ49219/161406229481225.png)
Question 4
The z-transform corresponding to the Laplace transform
is
![](https://gradeup-question-images.grdp.co/liveData/PROJ57869/1600165697201620.png)
Question 5
The zero-phase DTFT of a sequence x[n] is shown in figure below.
Which of the following is the DTFT of the sequence ?
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