List of top Electrical Engineering Questions on Signals and Systems asked in AP PGECET

Which of the following system is linear?
The z-transform of $a^n u(n)$ is:
If the Impulse response is $h[n] = (0.5)^n u(n)$ then, the system is
Find the z-transform of x[n] = $\delta$[n] + $\delta$[n + 1]:
Given X(s) = $\frac{1}{s+2}$, ROC: Re(s) $>$ -2. Signal is:
If energy of x(t) = e$^{-2t}$u(t) is 0.25, find a:
If x[n] = u[n] and h[n] = u[n - 2], find the value of y[5].
A signal x(t) = cos(2$\pi$t) + sin(3$\pi$t) is: