ECE · all questions

Signal Processing
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Q421

FIR filter having anti-symmetrical impulse response with even filter order can be used to design

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Q422

Consider the following statements for a system given by

y (n) = x (n) \sum_{k = - \infty}^{\infty} δ (n - 3 k) .

1. The system is linear.
2. The system is non-linear.
3. The system is causal.
4. The system is non-causal.
Which of the above statements is/are correct?

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Q423

The Fourier transform of Acos Ω₀t is given by

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Q424

Consider an LTI system representing a passive electrical network. If the input is a sinusoidal signal, then the steady-state output of the network is

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Q425

A digital signal processing system is described by the expression:
y(n) = 2x(n) + x(n - 1) + 2y(n - 1) The system is:

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Q426

Consider the following system
H(ejω) is a . . . . . . . . with band limited frequency . . . . . . . .
Signal Processing mcq question image

Signal Processing mcq question image

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Q427

Using Z-transform method obtain impulse response of a system described by y(n) = 2.5y(n - 1) + x(n)

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Q428

Which one of the following is the correct Laplace transfer of the signal in the given Figure?
Signal Processing mcq question image

Signal Processing mcq question image

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Q429

The correlation function of a wide-sense stationary random process representing a non-deterministic signal is

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Q430

Find the final value of the system corresponding to

Y (s) = \frac{3 ( s + 2 )}{s ( s ^{2} + 2 s + 10 )}

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Q431

Consider the function f(t) having Laplace transform

F (s) = \frac{ω _{0}}{s ^{2} + ω _{0}^{2}} Re [s] > 0

The final value of f(t) would be:

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Q432

The fundamental period of periodic sequence x(n) = n modulo 6 is

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Q433

The input to a linear delta modulator is a sinusoidal signal having a peak amplitude of 1 volt. The maximum input signal is sampled at 8 times the Nyquist rate. The step size for a 800 Hz input, assuming no slope overload, is:

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Q434

The Nyquist filter has impulse response given by

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Q435

The system function of the digital filter is

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Q436

The ROC of a stable system must include the

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Q437

A band pass signal extends from 1 kHz to 2 kHz. The minimum sampling frequency needed to retain all information in the sampled signal is

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Q438

The impulse response of a system is h(t) = tu(t). For an input u(t – 1), the output is

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Q439

A digital filter is said to be an IIR if:

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Q440

Transfer functions of FIR filters will have

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