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Recent questions tagged discretetimesignals
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GATE2020EC: 5
The output $\text{y[n]}$ of a discretetime system for an input $\text{x[n]}$ is $y\left [ n \right ]=max_{\infty \leq k\leq n}\left  x\left [ k \right ] \right .$ The unit impluse response of the system is $0$ for all $n$. $1$ for all $n$. unit step signal $u\left [ n \right ].$ unit impulse signal $\delta \left [ n \right ].$
asked
Feb 13
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jothee
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1.4k
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gate2020ec
continuoustimesignals
signalsandsystems
discretetimesignals
impulseresponse
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0
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2
GATE2020EC: 29
A finite duration discretetime signal $\text{x[n]}$ is obtained by sampling the continuoustime signal $x\left ( t \right )=\cos\left ( 200\pi t \right )$ at sampling instants $t=n/400,$ $n=0, 1, ...,7.$ The $8$point discrete Fourier transform $\text{(DFT)}$ ... zero. Only $\text{X[2]}$ and $\text{X[6]}$ are nonzero. Only $\text{X[3]}$ and $\text{X[5]}$ are nonzero.
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Feb 13
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Others
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jothee
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1.4k
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gate2020ec
continuoustimesignals
signalsandsystems
discretetimesignals
0
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0
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3
GATE2019 EC: 3
Let $H(z)$ be the $z$ transform of a realvalued discretetime signal $h[n].$ If $P(z) = H(z) H(\frac{1}{z})$ has a zero at $z= \frac{1}{2}+\frac{1}{2}j,$ and $P(z)$ has a total of four zeros, which one of the following plots represents all the zeros correctly?
asked
Feb 13, 2019
in
Others
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Arjun
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1.4k
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gate2019ec
continuoustimesignals
signalsandsystems
discretetimesignals
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4
GATE201638
A discretetime signal $x[n] = \delta[n – 3] + 2 \delta[n – 5]$ has $z$transform $X(z)$. If $Y(z) = X(z)$ is the $z$transform of another signal $y[n]$, then $y[n] = x[n]$ $y[n] = x[n]$ $y[n] = x[n]$ $y[n] = x[n]$
asked
Mar 28, 2018
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by
Milicevic3306
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15.7k
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gate2016ec3
continuoustimesignals
signalsandsystems
discretetimesignals
0
votes
0
answers
5
GATE2017 EC2: 19
Consider the state space realization $\begin{bmatrix} \dot{x_1}(t)\\ \dot{x_2}(t) \end{bmatrix}=\begin{bmatrix} 0 &0 \\ 0&9 \end{bmatrix}\begin{bmatrix} x_1(t)\\ x_2(t) \end{bmatrix}+\begin{bmatrix} 0\\ 45 \end{bmatrix} u(t)$ , with the initial ... step function. The value of $\underset{t\rightarrow \infty }{\lim}\left  \sqrt{x_1^2(t)+x_2^2(t)} \right $ is __________.
asked
Nov 23, 2017
in
Continuoustime Signals
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admin
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2.8k
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gate2017ec2
discretetimesignals
numericalanswers
continuoustimesignals
signalsandsystems
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0
answers
6
GATE2017 EC1: 32
Two discretetime signals $x[n]$ and $h[n]$ are both nonzero only for $n=0,1,2$, and are zero otherwise .It is given that $x[0]=1, \: x[1]=2, \: x[2]=1, \: h[0]=1$ Let $y[n]$ be the linear convolution of $x[n]$ and $h[n]$. Given that $y[1]=3$ and $y[2]=4$, the value of the expression $(10y[3]+y[4])$ is__________.
asked
Nov 17, 2017
in
Continuoustime Signals
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admin
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2.8k
points)
gate2017ec1
numericalanswers
continuoustimesignals
discretetimesignals
signalsandsystems
0
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0
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7
GATE2017 EC1: 6
Consider a single input single output discretetime system with $x[ n ]$ as input and $y [ n ]$ ... following statements is true about the system? It is causal and stable It is causal but not stable It is not causal but stable It is neither causal nor stable
asked
Nov 17, 2017
in
Continuoustime Signals
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admin
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2.8k
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gate2017ec1
ltisystems
continuoustimesignals
signalsandsystems
discretetimesignals
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