Electronics and Communication Engineering - Signals and Systems

1.
The unit step response of a system starting from rest is given by c(t) = 1 - e-2t for t ≥ 0. The transfer function of the syste is
Answer: Option
Explanation:
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2.
check the following system for causality
  1. y[n] = x[n] + 2x[n - 1]
  2. y[n] = x[n - k]
  3. y[n] = x[2n]
(1) and (2)
(2) and (3)
(1) omly
(1) and (3)
Answer: Option
Explanation:
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3.
If the system transfer function of a discrete time system then system is
stable
unstable
stable at z = 1
unstable at z = 1
Answer: Option
Explanation:
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4.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
Triangular
Rectangular
Trapezoidal
Semi-circular
Answer: Option
Explanation:
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5.
The function Ae(s + jω)t represens a rotating phasor having a magnitude increasing with time.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.