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Recent questions tagged discretetimesignals
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GATE2020EC: 5
The output $y[n]$ of a discretetime system for an input $x[n]$ is $y\left [ n \right ]=\underset{\infty \leq k\leq n}{\text{max}} \mid x\left [ k \right ] \mid$ The unit impulse 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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gate2020ec
continuoustimesignals
signalsandsystems
discretetimesignals
impulseresponse
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2
GATE2020EC: 29
A finite duration discretetime signal $x[n]$ is obtained by sampling the continuoustime signal $x\left ( t \right )=\cos\left ( 200\pi t \right )$ at sampling instants $t=n/400, n=0, 1, \dots ,7.$ The $8$point discrete Fourier transform $\text{(DFT)}$ of $x[n]$ is defined ... zero. Only $X[4]$ is nonzero. Only $X[2]$ and $X[6]$ are nonzero. Only $X[3]$ and $X[5]$ are nonzero.
asked
Feb 13
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jothee
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1.4k
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gate2020ec
continuoustimesignals
signalsandsystems
discretetimesignals
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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 12, 2019
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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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Milicevic3306
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15.7k
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gate2016ec3
continuoustimesignals
signalsandsystems
discretetimesignals
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0
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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 __________.
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Nov 23, 2017
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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
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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
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gate2017ec1
numericalanswers
continuoustimesignals
discretetimesignals
signalsandsystems
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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
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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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