Signal Processing MCQ Questions & Answers | ECE

A. e^-n

B. eⁿ

C. u(n)

D. δ(n)

A. |α| = 2, |β| < 2

B. |α| > 2, |β| > 2

C. |α| < 2, any value of β

D. |β| < 2, any value of α

A. cos ω₀τ

B. sin ω₀τ

C. cos[(ω - ω₀)τ]

D. sin[(ω - ω₀)τ]

A. Aperiodic

B. Aperiodic with response restricted to (-ω_c, ω_c)

C. Periodic with period 2π

D. Quasi periodic with response extending to infinity

A. 3000

B. 15

C. 130

D. 200

A. $$\frac{1}{2}$$V² cos ωτ

B. V² cos ωτ

C. V² cos² ωτ

D. 2V² cos² ωτ

A. Rectangular pulse of duration T

B. Rectangular pulse of duration 2T

C. Triangular pulse of duration T

D. Triangular pulse of duration 2T

A. y(t) = x²(t)e^-tu(t)

B. y(t) = [e^-t - e^-2t]u(t)

C. y(t) = t²e^-2tu(t)

D. y(t) = 2t²e^-2tu(t)

A. Causal and stable

B. Non causal and stable

C. Non causal and not stable

D. Causal and not stable

A. \[H\left( {{e^{j\omega }}} \right) = \left\{ \begin{array}{l} 1,\,\,\,\,\left| \omega \right| \le \pi /D\\ 0,\,\,\,\,{\rm{otherwise}} \end{array} \right.\]

B. \[H\left( {{e^{j\omega }}} \right) = \left\{ \begin{array}{l} {T_s},\,\,\,\,\left| \omega \right| \le \pi /D\\ 0,\,\,\,\,{\rm{otherwise}} \end{array} \right.\]

C. \[H\left( {{e^{j\omega }}} \right) = \left\{ \begin{array}{l} \frac{1}{{{T_s}}},\,\,\,\,\left| \omega \right| \le \pi /D\\ 0,\,\,\,\,{\rm{otherwise}} \end{array} \right.\]

D. \[H\left( {{e^{j\omega }}} \right) = \left\{ \begin{array}{l} {e^{ - j3\omega }},\,\,\,\,\left| \omega \right| \le \pi /D\\ 0,\,\,\,\,{\rm{otherwise}} \end{array} \right.\]