Electronics and Communication Engineering - Signals and Systems

6.
A signal m(t) with bandwidth 500 Hz is first multiplied by a signal g(t) where

The resulting signal is then passed through on ideal low pass filter with bandwidth 1 kHz. The output of the low pass filter would me
δ(t)
m(t)
0
m(t) δ(t)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
ROC of sequence x[n] = δ[n] is
Not exist
z = 0
Entire Plane
Entire Plane expect z = 0, z = ∞
Answer: Option
Explanation:
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8.
The Z.T. of sequence x[n] = an ∪ [n] is
Answer: Option
Explanation:
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9.
The unit step response of a system is (1 - eat) u(t). Then its impulse response is
e- at u(t)
ae- at u(t)
- ae- at u(t)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
The output of a linear system for any input can be computed in which of the following ways?
Only by summation of inpulse response by convolution integral
Only by summation of step response by superposition integral
Neither a nor b
Either (a) or (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.