Electronics and Communication Engineering - Signals and Systems

31.
The impulse response h[n] of a linear time invariant system is given by h[n] = ∪[n + 3 ] + ∪[n - 2] -2∪[n -7]. The above system is
stable but non-casual
stable and casual
casual but unstable
unstable and not casual
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
Which one condition is true to check the periodically for discrete time signal (where K is any integer, N is period, f0 is frequency of signal)
f0 = K/N
f0 = K + N
f0 = KN
f0 = N/K
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
If v(t) = 0 for t < 0 and e-at for t ≥ 0 V(jω) = 1/(a + jω).
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
The term 'energy spectral density' is associated with
periodic waveform
non-periodic waveform
both perodic and non -perodic waveform
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
If f(t) = 1, F(jω) = 2p δ(ω).
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.