Signal Processing - Study Mode
[#196] For a given transmitted pulse p(t), 0 ≤ t ≤ T, the impulse response of a filter matched to the received signal is
Correct Answer
(D) p(T - t), 0 ≤ t ≤ T
[#197] Consider a single input single output discrete-time system with x[n] as input and y[n] as output, where the two are related as [yleft[ n
ight] = left{ {x08egin{array}{*{20}{c}}
{nleft| {xleft[ n
ight]}
ight|,}&{{ ext{for }}0 leqslant n leqslant 10} \
{xleft[ n
ight] - xleft[ {n - 1}
ight],}&{{ ext{otherwise}}}
end{array}}
ight.] Which one of the following statements is true about the system?
Correct Answer
(A) It is causal and stable
[#198] The covariance function, C x (τ), of a stationary stochastic process, x(t), is said to be positive definite. This means that
Correct Answer
(A) $${C_x}left( au
ight) geqslant 0{ ext{ for all }} au $$
[#199] A composed signal is given by x(t) = cos(ωt) + sin(ωt) + sin 2 (ωt) + cos(ωt) + sin 2 (ωt). The odd component is
Correct Answer
(B) sin(ωt)
[#200] The signal x(n) shown in the above figure is a
Correct Answer
(C) non-periodic signal