Learn Signal Processing MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Signal Processing MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-6 section-2
Each section contains 100 MCQs on
Signal Processing .
The impulse response functions of four linear systems S1, S2, S3, S4 are given respectively by
$${h_1}\left( t \right) = 1,$$ $${h_2}\left( t \right) = u\left( t \right),$$ $${h_3}\left( t \right) = \frac{{u\left( t \right)}}{{t + 1}},$$ $${h_4}\left( t \right) = {e^{ - 3t}}u\left( t \right)$$
Where u(t) is the unit step function. Which of these systems is time invariant, causal, and stable?
For an all-pass system $$H\left( z \right) = \frac{{\left( {{z^{ - 1}} - b} \right)}}{{\left( {1 - a{z^{ - 1}}} \right)}},$$ where | H(e-jω) | = 1, for all ω. If Re(a) ≠ 0, lm(a) ≠ 0, then b equals
Suppose x[n] is an absolutely summable discrete- time signal. Its z-transform is a rational function with two poles and two zeroes. The poles are at z = ±2j. Which one of the following statements is TRUE for the signal x[n]?
Let h(t) denote the impulse response of a causal system with transfer function $${1 \over {s + 1}}.$$ Consider the following three statements:
S1 : The system is stable.
S2 : $${{h\left( {t + 1} \right)} \over {h\left( t \right)}}$$ independent of t for t > 0.
S3 : A non-causal system with the same transfer function is stable.
For the above system,
The first five points of the 8-point DFT of a real valued sequence are 5, 1 - j3, 0, 3 - j4 and 3 + j4. The last two points of the DFT are respectively
