In discrete signal, if y [n] = x [k*n] and k>1 then ______

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

It has no effect on samples

Some samples are lost from x [n]

Some samples are added to x [n]

Samples will be increased with factor k

Correct Answer : Option (B) : Some samples are lost from x [n]

Explanation : For discrete time signal y [n] = x [k*n] and k>1, it will be compressed signal and some samples will be lost. The samples lost will not violate the rules of sampling theorem.

Recently Updated in Signals and Systems Questions

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