What is the energy density spectrum Sxx( ) of the signal x(n)=anu(n), – McqOptions

MCQOPTIONS

1.	What is the energy density spectrum Sxx( ) of the signal x(n)=aⁿu(n), \|a\|<1?
A.	( frac{1}{1+2acos +a^2} )
B.	( frac{1}{1+2asin +a^2} )
C.	( frac{1}{1-2asin +a^2} )
D.	( frac{1}{1-2acos +a^2} )
Answer» E.

Discussion

No Comment Found

Related MCQs

Which of the following electromagnetic signals has a frequency range of 30kHz-3MHz?
If F<sub>1</sub> and F<sub>2</sub> are the lower and upper cutoff frequencies of a band pass signal, then what is the condition to be satisfied to call such a band pass signal as narrow band signal?
The term bandwidth represents the quantitative measure of a signal.
If a power signal has its power density spectrum concentrated about zero frequency, the signal is known as ______________
What is the Fourier transform of the signal x(n)=u(n)?
If c<sub>x</sub>(n) is the complex cepstrum sequence obtained from the inverse Fourier transform of ln X( ), then what is the expression for c<sub> </sub>(n)?
If x(n) is a stable sequence so that X(z) converges on to a unit circle, then the complex cepstrum signal is defined as ____________
The sequence x(n)= ( frac{sin _c n}{ n} ) does not have both z-transform and Fourier transform.
What is the Fourier transform of the signal x(n) which is defined as shown in the graph below?
What is the energy density spectrum Sxx( ) of the signal x(n)=a<sup>n</sup>u(n), |a|<1?