Exponentially damped sinusoidal signal is ______

Electronics and Communication Engineering (ECE) : Signals and Systems - Quiz(MCQ)

Periodic

Maybe periodic

Non periodic

Insufficient information

Correct Answer : Option (C) : Non periodic

Explanation : Exponentially damped sinusoidal signal of any kind is not periodic as it does not satisfy the periodicity condition.

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For a Gaussian process, auto-correlation sequence also implies that

ergodic process

statistical dependence

statistical independence

All of the above

Correct Answer : statistical dependence

Consider the following statements

1. If ensemble and time averages of a random process are identical, the process is ergodic.
2. If ensemble and time average of a random process are not identical, the process is ergodic.
3. An ergodic process is stationary.
4. A stationary process is necessarily ergodic.

Which of the above statements are correct?

1 only

1 and 3 only

1 and 4 only

1, 3 and 4 only

Correct Answer : 1 and 3 only

In RLC circuits the state variables generally selected are

voltages across capacitors

currents through resistances and capacitances

currents through inductances and voltages across capacitances

currents through resistances and voltages across capacitors

Correct Answer : currents through inductances and voltages across capacitances