Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 1 (Q.No. 31)
31.
If the system T.F. is 
The differential equation representing the system is
The differential equation representing the system is
none of these
Answer: Option
Explanation:
(s3 + 2s2 + 5s + 6)y(s) = (s2 + 4) x (s)
s3y(s) + 2s2y(s) + 5sy(s) + 6y(s) = s2 x (s) + 4 x (s)
Replacing s by 
and y(s) by y(t) and x(s) by x(t) we get
y(t) + 2
y(t) + 5y(t) + 6y(t)
= x(t) + 4x(t)
+ 2
+ 5
+ 6 = 
+ 4x
This is required differential equation.
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