A unity feedback system as shown has damping ratio of 0.8 using derivative controlFollowing parameter are obtained(A) Characteristic equation is s2 + 1.6s + 16 = 0(B) ξ = 0.2 (without derivative control)(C) ξ = 0.8 (without derivative control)(D) ωn = 4 rad/secChoose the most appropriate answer from the options given below:(1) (A), (C) and (D) only(2) (B), (D) only(3) (A), (B), (D) only(4) (C), (D)

A unity feedback system as shown has damping ratio of 0.8 using deriva

1.	A unity feedback system as shown has damping ratio of 0.8 using derivative controlFollowing parameter are obtained(A) Characteristic equation is s2 + 1.6s + 16 = 0(B) ξ = 0.2 (without derivative control)(C) ξ = 0.8 (without derivative control)(D) ωn = 4 rad/secChoose the most appropriate answer from the options given below:(1) (A), (C) and (D) only(2) (B), (D) only(3) (A), (B), (D) only(4) (C), (D)
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

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