Signal Processing MCQ Questions & Answers | ECE

A. C < R

B. C < R²

C. C > R

D. C > R²

A. 126

B. 32

C. 252

D. 64

A. unit circle on z - plane

B. inside the unit circle on z - plane

C. outside the unit circle on z - plane

D. anywhere on z - plane

A. S_x(ω) is a real function of ω

B. S_x(ω) is an even function of ω

C. S_x(ω) is a non-positive function of ω i.e. S_x(ω) ≤ for all ω

D. All of the above

A. $${x_1}\left( t \right) = 2{e^{j\left( {t + \frac{\pi }{4}} \right)}}u\left( t \right)$$

B. $${x_2}\left( n \right) = u\left[ n \right] + u\left[ { - n} \right]$$

C. $${x_3}\left[ n \right] = \sum\limits_{k = - \infty }^\infty {\left\{ {\delta \left[ {n - 4k} \right] - \delta \left[ {n - 1 - 4k} \right]} \right\}} $$

D. $${x_4}\left( t \right) = {e^{\left( { - 1 + j} \right)t}}$$

A. $$\sum\limits_{k = 1}^3 {{b_k}\cos \left( {k{\omega _0}t + {\phi _k}} \right),} {\text{ where }}{b_k} \ne {a_k},\,\forall k$$

B. $$\sum\limits_{k = 1}^3 {{b_k}\cos \left( {k{\omega _0}t + {\phi _k}} \right),} {\text{ where }}{b_k} \ne 0,\,\forall k$$

C. $$\sum\limits_{k = 1}^3 {{a_k}\cos \left( {k{\omega _0}t + {\phi _k}} \right)} $$

D. $$\sum\limits_{k = 1}^2 {{a_k}\cos \left( {k{\omega _0}t + {\phi _k}} \right)} $$

A. low-pass filter

B. high-pass filter

C. band-pass filter

D. band-stop filter

A. 4e^j4πf

B. 2e^j8πf

C. 4e^-j4πf

D. 2e^j8πf

A. π/Μ

B. π/M + 1

C. π/M - 1

D. π/M²

A. Only sinusoidal component

B. Only cosine component

C. A dc component

D. Only even harmonic components