Exercise: Signals And Systems

Questions for: Signals And Systems

Assertion (A): The function kest with both σ and ω positive and s > 0 depicts a sinusoid whose amplitude increases with time.

Reason (R): If σ = 0, kest becomes a sinusoid.

A:
Both A and R are correct and R is correct explanation of A
B:
Both A and R are correct but R is not correct explanation of A
C:
A is true, R is false
D:
A is false, R is true
Answer: B
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The energy associated with a function f(t) is
. In terms of Fourier transform, E =
A:
B:
C:
D:
Answer: A
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Which one of the following is correct? Energy of a power signal is
A:
finite
B:
zero
C:
infinite
D:
between 1 and 2
Answer: C
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For a Gaussian process, auto-correlation sequence also implies that
A:
statistical independence
B:
statistical dependence
C:
ergodic process
D:
all
Answer: B
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(sI - A)-1 is equal to
A:
adj (sI - A)/det (sI - A)
B:
det (sI - A)/adj(sI - A )
C:
[adj (sI - A)] [det(sI - A)]
D:
none of the above
Answer: A
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