Signal Processing - Study Mode
[#66] Match List-I with List-II ) and select the correct answer using the options given below: List-I (Input-output relation) List-II (Property of the system) a. y(n) = x(n) 1. Nonlinear, non-causal b. y(n) = x(n 2 ) 2. Linear, non-causal c. y(n) = x 2 (-n) 3. Linear, causal d. y(n) = x 2 (n) 4. Nonlinear, causal
Correct Answer
(B) a-3, b-2, c-1, d-4
[#67] Let x(t) ↔ X(jω) be Fourier Transform pair. The Fourier Transform of the signal x(5t - 3) in terms of X(jω) is given as
Correct Answer
(A) $$frac{1}{5}{e^{frac{{ - j3omega }}{5}}}Xleft( {frac{{jomega }}{5}}
ight)$$
(E) $${1 over 5}{e^{-{{j3omega } over 5}}}Xleft( {{{jomega } over 5}}
ight)$$
[#68] According to Shanon's theorem, the output from any source of rate R can be coded and transmitted over channel capacity C with the condition that
Correct Answer
(C) C > R
[#69] A discrete time signal is given as $$xleft[ n
ight] = cos frac{{pi n}}{9} + sin left[ { - frac{{pi n}}{7} + frac{1}{2}}
ight].$$ The period N for the periodic signal is
Correct Answer
(A) 126
[#70] A stable and casual digital infinite impulse response filter has its pole location at
Correct Answer
(B) inside the unit circle on z - plane