Signal Processing MCQ Questions & Answers

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Each section contains 100 MCQs on Signal Processing .

The output y(t) of a continues-time system S for the input x(t) is given by?
$$y\left( t \right) = \int\limits_{ - \infty }^t x \left( \lambda \right)d\lambda $$
Which one of the following is correct?

A) S is linear and time-invariant B) S is linear and time-varying C) S is non-linear and time-invariant D) S is non-linear and time-varying

Discuss

Answer & Solution

Answer: Option A

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

Fourier transform of te^-atu(t), (Where, a > 0, u(t) is the Unit step function) is

A) $$\frac{a}{{{{\left( {a + j2\pi f} \right)}^2}}}$$ B) $$\frac{1}{{{{\left( {a + j2\pi f} \right)}^2}}}$$ C) $$\frac{a}{{\left( {a + j2\pi f} \right)}}$$ D) $$\frac{1}{{\left( {a + j2\pi f} \right)}}$$

Discuss

Answer & Solution

Answer: Option B

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

Consider the signal \[X\left( t \right) = \left\{ \begin{gathered} 2\cos \left( t \right) + \cos \left( {2t} \right);\,\,\,t < 0 \hfill \\ 2\sin \left( t \right) + \sin \left( {2t} \right);\,\,\,t \leqslant 0 \hfill \\ \end{gathered} \right.\]
The signal X(t) is

A) periodic with period 2π B) periodic with period π C) non-periodic D) periodic with period $$\frac{\pi }{2}$$

Discuss

Answer & Solution

Answer: Option C

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

The transfer function of a zero-order hold is

A) $$\frac{{1 - \exp \left( { - {\text{Ts}}} \right)}}{{\text{s}}}$$ B) $$\frac{1}{{\text{s}}}$$ C) $$1$$ D) $$\frac{1}{{\left[ {1 - \exp \left( { - {\text{Ts}}} \right)} \right]}}$$

Discuss

Answer & Solution

Answer: Option A

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

A random variable z, has a probability density function f(z), where f(z) = e^-z 0 ≤ z ≤ ∞, the probability of 0 ≤ z ≤ 2 will be approximately

A) 0.368 B) 0.135 C) 0.393 D) 0.865

Discuss

Answer & Solution

Answer: Option D

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

A signal m(t) band-limited to 3 kHz is sampled at a rate $$33\frac{1}{3}\% $$ higher than the Nyquist rate. The maximum acceptable error in the sample amplitude is 0.5% of the peak amplitude m_p. The quantized samples are binary coded, then the minimum bandwidth of a channel required to transmit the encoded binary signal will be:

A) 20 kHz B) 24 kHz C) 28 kHz D) 32 kHz

Discuss

Answer & Solution

Answer: Option D

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

Which of the following schemes of system realization uses separate delay for input and output samples?

A) Direct form II B) Direct form I C) Cascade form D) Parallel form

Discuss

Answer & Solution

Answer: Option B

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

Consider a discrete random variable assuming finitely many values. The cumulative distribution function of such a random variable is

A) non-increasing function B) non-decreasing function with finitely many discontinuities and assuming values less than one C) non-decreasing function without discontinuities D) non-decreasing function assuming values larger than one

Discuss

Answer & Solution

Answer: Option B

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

The relationship between the input x(t) and the output y(t) of a system is $$\frac{{{d^2}y}}{{d{t^2}}} = x\left( {t - 2} \right)u\left( {t - 2} \right) + \frac{{{d^2}x}}{{d{t^2}}}$$
The transfer function of the system is

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

Discuss

Answer & Solution

Answer: Option B

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

100

A signal g(t) = A then g(t) is a

A) Energy signal B) Power signal C) Neither energy nor power signal D) Insufficient data

Discuss

Answer & Solution

Answer: Option B

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

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Signal Processing MCQ Questions & Answers | ECE