Signal Processing MCQ Questions & Answers | ECE

Let the signal f(t) = 0 outside the interval [T₁, T₂], where T₁ and T₂ are finite. Furthermore, |f(t)| < ∞. The region of convergence (ROC) of the signal's bilateral Laplace transform F(s) is

Impulse invariance method is not preferred in the design of FIR filter other than low pass filter because of

The impulse response h(t) of a linear time invariant continuous time system is described by h(t) = exp(αt)u(t) + exp(βt)u(-t) where u(-t) denotes the unit step function, and α and β are real constants. This system is stable if

A linear phase channel with phase delay T_p and group delay T_g must have

A signal x(t) = sinc(αt), where α is a real constant, is the input to a linear time invariant system whose impulse response is h(t) = sinc(βt), where β is a real constant. If min(α, β) denotes the minimum of α and β and similarly, max(α, β) denotes the maximum of α and β, and K is a constant, which one of the following statements is true about the $$\left( {{\text{here, }}\sin {\text{c}}\left( {\text{x}} \right) = \frac{{\sin \left( {\pi {\text{x}}} \right)}}{{\pi {\text{x}}}}} \right)$$     output of the system?

An LTI system having transfer function $$\frac{{{s^2} + 1}}{{{s^2} + 2s + 1}}$$   and input x(t) = sin(t + 1) is in steady state. The output is sampled at a rate ω_s rad/s to obtain the final output {y(k)}. Which of the following is true?

Which one of the following must be satisfied if a signal is to be periodic for -∞ < t < ∞?

Express the following finite discrete time signal as the difference of two unit step sequences:
x[n] = 1, for 0 ≤ n ≤ 5; and 0 otherwise.

A periodic function of half-wave symmetry is necessarily

The Laplace transformation of a doublet is: