Digital Communications Random Signals Online Exam Quiz
Digital Communications Random Signals GK Quiz. Question and Answers related to Digital Communications Random Signals. MCQ (Multiple Choice Questions with answers about Digital Communications Random Signals
The distribution function of -(infinity) and (infinity) is _____
Options
A : 0 and 1
B : 1 and 0
C : Both 0
D : Both 1
A random process is called as stationary in strict sense if
Options
A : Its statistics vary with shift in time origin
B : Its statistics does not vary with shift in time origin
C : Its autocorrelation vary with shift in time
D : Its autocorrelation does not vary with shift in time
Which gives the measure of randomness of the random variable?
Options
A : Mean
B : Variance
C : Standard variance
D : Pdf
The autocorrelation function is maximum at
Options
A : Origin
B : Infinity
C : Origin & Infinity
D : None of the mentioned
The distribution function of random variable is
Options
A : P(X less than or equal to x)
B : P(X greater than or equal to x)
C : P(X less than x)
D : P(X greater than x)
The value of the probability density function of random variable is
Options
A : Positive function
B : Negative function
C : Zero
D : One
Random process is a function of ______
Options
A : Random event and time
B : Random event and frequency
C : Random event and real number
D : None of the mentioned
Standard deviation is ______
Options
A : Rms value of dc
B : Rms value or ac
C : Either ac or dc
D : Neither dc nor ac
For a stationary process, autocorrelation function depends on
Options
A : Time
B : Time difference
C : Does not depend on time
D : None of the mentioned
Random variables give relationship between _____
Options
A : Two random events
B : Probability of occurence of two random events
C : Random event and a real number
D : Random event and its probability of occurrence
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