Causal systems is Linear system Linear time invariant systems non-linear systems
ID: 1996196 • Letter: C
Question
Causal systems is Linear system Linear time invariant systems non-linear systems Linear time variant system A system fed by input of signal represented as unit amplitude and infinitely small width. The output of the system is same shaped signal frequency response of the system impulse response of the system can't say anything from given information A discrete time sequence carrying x[n] = [1, 2, 3, 4] values. It is convolved by unit impulse delta[n - 2] function. Output of the system is 2 same impulse after 2 sample delay 1 3 11. Linear convolution is performed among two sequence of same size N. Output sequence has a. N samples 2N - 1 samples 2N samples 2N + 1 samples.Explanation / Answer
8. Causal System is one which cannot tell us about the future.
For a causal system, the impulse response of the system must be 0 for all t<0. So both linear and non linear system can behave as causal system.
Now lets come to time variance.
Signals x(t+2) and x(2t) can tell about the future but they are time invariant systms.
So answer to this question should be none among the options.
tx(t+2) can also tell about the future and is time variant system.
9. System in which the input is fed is having some response let's say h(t). If input is given to this system is impulse signal then output will be
y(t)= (t)*h(t) i.e impulse response of system. Therefore (c) is correct option.
10. In this question it is given that x(0)= 1,x(1)= 2,x(2)=3,x(4)=4.
when it is convolved with (n-2), the output will be the simple value x(2)= 3. Therefore (d) is correct option.
11. If two signals are convolved with length let's say M and other is having length N, then output lenth will be M+N-1.
Therefore in this case answer is N+N-1= 2N-1.
Therefore (b) is the correct option.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.