Signal Processing MCQs with Answers 2027

Q341

The units of the spectrum obtained by Fourier transforming the covariance function of a stationary stochastic process is

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Q342

Open question

Zero padding are

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Q343

Open question

In Digital Filters, how many interpolated data points are inserted between samples when performing 4X over sampling?

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Q344

Open question

Which of the following statement is not true

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Q345

Open question

Which of the following is not a periodic function of φ?

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Q346

Open question

Which of the following cannot be the Fourier series expansion of a periodic signal?

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Q347

Open question

A system with input x[n] and output y[n] is given as

y [n] = (sin \frac{5}{6} π n) x (n) .

The system is

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Q348

Open question

Let F(ω) be the Fourier transform of a function f(t), then F(0) is

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Q349

Open question

Let P be linearity, Q be time-invariance, R be causality and S be stability. A discrete-time system has the input-output relationship,

y\left( n \right) = \left\{ {\begin{array}{*{20}{c}} {x\left( n \right),}&{n \geqslant 1} \\ {0,}&{n = 0} \\ {x\left( {n + 1} \right)}&{n \leqslant - 1} \end{array}} \right.

Where x(n) is the input and y(n) is the output.
The above system has the properties

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Q350

Open question

Consider a random sinusoidal signal x(t) = sin(ω₀t + φ), where a random variable 'φ' is uniformly distributed in the range

\pm \frac{π}{2} .

The mean value of x(t) is

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Q351

Open question

Match List-I with List-II and select the correct answer using the options given below:

List-I (x[n])	List-II (X(z))
a. $a^{n} u [n]$	1. $\frac{a z}{( z - a ) ^{2}}$
b. $a^{n - 2} u [n - 2]$	2. $\frac{z e ^{- j}}{z e ^{- j} - a}$
c. $e^{j n} a^{n}$	3. $\frac{z}{z - a}$
d. $n . a^{n} u [n]$	4. $\frac{z ^{- 1}}{z - a}$

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Q352

Open question

The minimum number of delay elements required in realizing a digital filter with the transfer function

H (z) = \frac{1 + a z ^{- 1} + b z ^{- 2}}{1 + c z ^{- 1} + d z ^{- 2} + e z ^{- 3}}

is

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Q353

Open question

An input x[n] with length 3 is applied to a linear time invariant system having an impulse response h[n] of length 5 and Y(ω) is the DTFT of the output y[n] of the system. If |h[n]| ≤ L and |x[n]| ≤ L for all n, the maximum value of Y(0) can be:

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Q354

Open question

The complex exponential power form of Fourier series of x(t) is: