Explore topic-wise MCQs in Signals & Systems Questions and Answers.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Signals & Systems Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Find the Z-transform of x(n) = a|n|; |a|<1.

A. \(\frac{z}{z-a} – \frac{z}{z-(1/a)}\)
B. \(\frac{z}{z-(1/a)} – \frac{z}{z-a}\)
C. \(\frac{z}{z-a} + \frac{z}{z-(1/a)}\)
D. \(\frac{1}{z-a} – \frac{1}{z-(1/a)}\)
Answer» B. \(\frac{z}{z-(1/a)} – \frac{z}{z-a}\)
Discussion
2.

x(n) = an u(n) and x(n) = -an u(-n-1) have the same X(Z) and ROC.

A. True
B. False
Answer» C.
Discussion
3.

Find the Z-transform of cos⁡ωn u(n).

A. \(\frac{z(z+cos⁡ω)}{z^2-2z cos⁡ω+1}\)
B. \(\frac{z(z-cos⁡ω)}{z^2-2z cos⁡ω+1}\)
C. \(\frac{z(z-cos⁡ω)}{z^2+2z cos⁡ω+1}\)
D. \(\frac{z(z+cos⁡ω)}{z^2+2z cos⁡ω+1}\)
Answer» C. \(\frac{z(z-cos⁡ω)}{z^2+2z cos⁡ω+1}\)
Discussion
4.

Find the Z-transform of an u(n);a>0.

A. \(\frac{z}{z-a}\)
B. \(\frac{z}{z+a}\)
C. \(\frac{1}{1-az}\)
D. \(\frac{1}{1+az}\)
Answer» B. \(\frac{z}{z+a}\)
Discussion
5.

Find the Z-transform of δ(n+3).

A. z
B. z2
C. 1
D. z3
Answer» E.
Discussion