Electronics and Communication Engineering - Signals and Systems
Exercise : Signals and Systems - Section 1
- Signals and Systems - Section 1
- Signals and Systems - Section 2
- Signals and Systems - Section 3
- Signals and Systems - Section 4
- Signals and Systems - Section 5
- Signals and Systems - Section 6
- Signals and Systems - Section 7
- Signals and Systems - Section 8
- Signals and Systems - Section 9
- Signals and Systems - Section 10
31.
A signal m(t) is multiplied by a sinusoidal waveform of frequency fc such that
v(t)=m(t) cos 2pfct
If Fourier transform of m(t) is M(f), Fourier transform of v(t) will be
v(t)=m(t) cos 2pfct
If Fourier transform of m(t) is M(f), Fourier transform of v(t) will be
Answer: Option
Explanation:
It is a modulation process. The resultant has (f + fc) and (f - fc) terms.
32.
A voltage wave having 5% fifth harmonic content is applied to a series RC circuit. The percentage fifth harmonic content in the current wave will be
Answer: Option
Explanation:
IC = V(jωC).
33.
Assertion (A): If , the initial value of i(t) is 5A
Reason (R): As per initial vaue theroem
Answer: Option
Explanation:
Initial value theorem when applied to I(s) gives 5 A.
34.
δ(t) is a
Answer: Option
Explanation:
Because Unit step is a Power signal. So By trignometric identifies d(t) also power.
.
35.
The analog signal given below is sampled by 600 samples per second for m(t) = 3 sin 500 pt + 2 sin 700 pt then folding frequency is
Answer: Option
Explanation:
.
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