Electronics and Communication Engineering - Signals and Systems

1. 

The total area under the probability distribution curve is

A. 1
B. 0
C. depend upon curve equation
D.

Answer: Option A

Explanation:

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2. 

Which one of following is correct condition to check the stability of system?

A. Bounded I/P unbounded O/P
B. Bounded I/P and O/P
C. Bounded O/P and I/P
D. Bounded I/P Bounded O/P

Answer: Option B

Explanation:

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3. 

The inverse Fourier transform of the function F(ω) = is

A. sin ωt
B. cos ωt
C. sgnt
D. u(t)

Answer: Option C

Explanation:

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4. 

Let f1(t) = G1(t) + 4, f2(t) = G2(t) + 3. If G1(t) and G2(t) are uncorrected then the correlation between f1(t) and f2(t) are

A. 12
B. 7
C. 6
D. zero

Answer: Option D

Explanation:

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5. 

If p is the probability of success and q is the probability of failure, then the probability that there are r successes in n trails is

A. ncr pr qn - r
B. ncr pn - r qr
C. ncr pr qn + r
D. ncr pn qn - r

Answer: Option A

Explanation:

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