Question 1
Marks : +2 | -2
Pass Ratio : 100%
What is the z-transform of the signal x(n)=[3(2n)-4(3n)]u(n)?
Explanation: Let us divide the given x(n) into x1(n)=3(2n)u(n) and x2(n)= 4(3n)u(n)
Question 2
Marks : +2 | -2
Pass Ratio : 100%
If Z{x(n)}=X(z) and the poles of X(z) are all inside the unit circle, then the final value of x(n) as \\(n\\rightarrow\\infty\\) is given by i.e., \\(\\lim_{n\\rightarrow\\infty}\\)x(n)=?
Explanation: According to the Final Value theorem of z-transform we have,
Question 3
Marks : +2 | -2
Pass Ratio : 100%
If x(n) is an imaginary sequence, then the z-transform of the real part of the sequence is?
Explanation: If x(N) is an imaginary sequence, then the real part of x(n) is given as
Question 4
Marks : +2 | -2
Pass Ratio : 100%
What is the z-transform of the signal x(n)=an(sinω0n)u(n)?
Question 5
Marks : +2 | -2
Pass Ratio : 100%
X(z) is the z-transform of the signal x(n), then what is the z-transform of the signal nx(n)?