Signal Processing MCQ Questions & Answers

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Each section contains 100 MCQs on Signal Processing .

Consider a sequence x(n) = [2, 4, 6, 8, 0, 1, 3, 5, 7, 9]. Down-sample the sequence by 3 and then up-sample by 2. The resulting sequence is:

A) [2, 0, 0, 0, 7, 0] B) [2, 0, 0, 0, 0, 0, 7, 0, 0] C) [2, 0, 8, 0, 3, 0, 9, 0] D) [2, 2, 8, 8, 3, 3, 9, 9]

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

A discrete time system has impulse response h(n) = aⁿu(n + 2), |a| < 1. Which one of the following statements is correct? The system is

A) stable, causal and memoryless B) stable, causal and has memory C) stable, non-causal and has memory D) unstable, non-causal and memoryless

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

A periodic function satisfies Dirichlet's conditions. This implies that the function

A) is non-linear B) is not absolutely integrable C) guarantees that Fourier series representation of the function exists D) has infinite number of maxima and minima within a period

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

What is the Laplace transform of x(t) = -e^2tu(t) * tu(t)?

A) $$\frac{{ - 1}}{{{s^2}\left( {s + 1} \right)}}$$ B) $$\frac{{ - 1}}{{{s^2}\left( {s - 2} \right)}}$$ C) $$\frac{1}{{{s^2}\left( {s - 2} \right)}}$$ D) $$\frac{{ - 1}}{{s\left( {s - 2} \right)}}$$

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Transient signals can be observed using

A) storage oscilloscope B) sampling oscilloscope C) wave analyzer D) spectrum analyzer

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Consider a signal x(t) = 4cos(2t/3) + 8sin(0.5t) + 7sin(t/3 - π/6). Calculate the fundamental periodic.

A) 6π seconds B) 2π seconds C) 12π seconds D) π seconds

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The LTI system with h(t) = e^-t, -∞ < t < ∞ is

A) Causal and stable B) Causal and unstable C) Non-causal and stable D) Non-causal and unstable

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Digital filters have . . . . . . . . and are best suited for . . . . . . . . phase.

A) Less accuracy, linear B) High accuracy, linear C) High accuracy, non linear D) High accuracy, no linear

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The response of a Gaussian random process applied to a stable linear system is:
1. A Gaussian random process
2. Not a Gaussian random process
3. Completely specified by its mean and auto covariance functions
Which of the above statements is/are correct?

A) 1 only B) 2 only C) 2 and 3 D) 1 and 3

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

A rectangular pulse of duration T is applied to a filter matched to this input. The output of the filter is a

A) Rectangular pulse of duration T B) Rectangular pulse of duration 2T C) Triangular pulse of duration 2T D) Triangular pulse of duration T

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Signal Processing MCQ Questions & Answers | ECE