Q1. A minimum phase digital filter has all of its zeros

Q2. The Fourier transform of a DC signal \(x(t) = A\) is

Q3. What is the condition for sampling theorem to be true? \(\omega_s=\) sampling frequency, \(\omega_m =\) highest frequency in the input

Q4. The Fourier transform of signal \(\delta(t+1)+\delta(t-1)\) is

Q5. Which theorem states that the total average power of a periodic signal is equal to the sum of average powers of the individual Fourier coefficients?

Q6. The z-transform of a signal is given by \(X\left( z \right) = \frac{1}{4}\:\frac{{{z^{ - 1}}\left( {1 - {z^{ - 4}}} \right)}}{{{{\left( {1 - {z^{ - 1}}} \right)}^2}}}\) , its final value is

Q7. The signal u(t-3) is

Q8. Which among the following are the stable discrete time systems?

1. \(y(n) = x(4n)\)
2. \(y(n) = ax(n) -9\)
3. \(y(n)=x(-\frac{n}{2})\)
4. \(y(n) = \sin \left \{ x(n)\right \}\)

Q9. \(Sinc(x)\) function is defined as

Q10. What is the energy of a power signal