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

A.
B.
C.
D.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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]

A. (1) and (2)
B. (2) and (3)
C. (1) omly
D. (1) and (3)

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

3. 

If the system transfer function of a discrete time system then system is

A. stable
B. unstable
C. stable at z = 1
D. unstable at z = 1

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

4. 

Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?

A. Triangular
B. Rectangular
C. Trapezoidal
D. Semi-circular

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

5. 

The function Ae(s + jω)t represens a rotating phasor having a magnitude increasing with time.

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

1 2 3 4 5 6 7 8 9 10 Next »