Discrete-Time Signals and Systems MCQ
Discrete-Time Signals and Systems MCQ, Multiple Choice Questions on discrete-Time Signals and Systems, Digital Signal Processing MCQ, Discrete-Time Signals MCQ, Discrete-Time Systems MCQ, Engineering MCQ
Discrete Convolution and Correlation MCQ
Objective Type Questions
Q.1. A signal can be represented in
- time domain
- frequency domain
- both time and frequency domain
- none of these
Answer: both time and frequency domain
Q.2. δ(n) =
- u(n) + u(n – 1)
- u(n) u(n – 1)
- u(n) – u(n – 1)
- u(n – 1) – u(n)
Answer: u(n) – u(n – 1)
Q.3. A deterministic signal has
- no uncertainty
- uncertainty
- partial uncertainty
- none of these
Answer: no uncertainty
Q.4. A random signal has
- no uncertainty
- uncertainty
- partial uncertainty
- none of these
Answer: uncertainty
Q.5. The fundamental period of a discrete-time complex exponential sequence is N =
- \frac{2\Pi }{\omega_{0}}
- \frac{2\Pi }{m}\omega_{0}
- \frac{2\Pi }{\omega_{0}}m
- 2\Pi m \omega_{0}
Answer: \frac{2\Pi }{\omega_{0}}m
Q.6. The fundamental period of a sinusoidal sequence is N =
- 2\Pi m
- \frac{\omega_{0} }{2\Pi m}
- m\omega_{0}
- \frac{2\Pi }{\omega_{0}}m
Answer: \frac{2\Pi }{\omega_{0}}m
Q.7. A signal is an energy signal if
- E = 0, P = 0
- E = ∞, P = finite
- E = finite, P = 0
- E = finite, P = ∞
Answer: E = finite, P = 0
Q.8. A signal is a power signal if
- P = finite, E = 0
- P = finite, E = ∞
- P = finite, E = finite
- P = ∞, E = ∞
Answer: P = finite, E = ∞
Q.9. The signal αnu(n) is an energy signal if
- | α| < 1
- | α| > 1
- | α| = 1
- | α| = 0
Answer: | α| < 1
Q.10. The signal αnu(n) is a power signal if
- | α| < 1
- | α| > 1
- | α| = 1
- | α| = 0
Answer: | α| = 1
Q.11. A system whose output depends on future inputs is a
- static system
- dynamic system
- non-causal system
- both dynamic and non-causal system
Answer: both dynamic and non-causal system
Q.12. A non-anticipative system is a
- static system
- dynamic system
- causal system
- non-causal system
Answer: causal system
Q.13. y(n) = x(n + 2) is for a
- linear system
- dynamic system
- both linear and dynamic system
- non-linear system
Answer: both linear and dynamic system
Q.14. y(n) = x(2n) is for a
- time-invariant system
- time varying, dynamic system
- linear, time varying, dynamic system
- linear, time-invariant, static system
Answer: linear, time varying, dynamic system
Q.15. y(n) = x(–n) is for a
- non-causal system
- linear, causal, time-invariant system
- linear, non-causal, time-invariant system
- linear, non-causal, time-varying, dynamic system
Answer: linear, non-causal, time-varying, dynamic system
Q.16. y(n) = x(n) + nx(n – 1) is for a
- dynamic system
- causal system
- linear system
- all of these
Answer: all of these
Q.17. y(n) = x(n) u(n) is for a
- static, linear system
- causal, time-invariant system
- both the above
- none of these
Answer: static, linear system
Q.18. A system which has a unique relationship between its input and output is called
- linear system
- causal system
- time-invariant system
- invertible system
Answer: invertible system
Q.19. A system which does not have a unique relationship between its input and output is called
- non-linear system
- non-causal system
- time-variant system
- non-invertible system
Answer: non-invertible system