Question 2
Marks : +2 | -2
Pass Ratio : 100%
What is the impulse response of the system described by the second order difference equation y(n)-3y(n-1)-4y(n-2)=x(n)+2x(n-1)?
Explanation: The homogenous solution of the given equation is yh(n)=C1(-1)n+C2(4)n—-(1)
Question 6
Marks : +2 | -2
Pass Ratio : 100%
If the system is initially relaxed at time n=0 and memory equals to zero, then the response of such state is called as ____________
Explanation: The memory of the system, describes, in some case, the ‘state’ of the system, the output of the system is called as ‘zero-state response’.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
What is the particular solution of the first order difference equation y(n)+ay(n-1)=x(n) where |a|<1, when the input of the system x(n)=u(n)?
Explanation: The assumed solution of the difference equation to the forcing equation x(n), called the particular solution of the difference equation is