Which one of the following is an advantage of a PD controller in terms of damping and natural frequency?
A.	G remains fixed but natural frequency increases
B.	G remains fixed but natural frequency decreases
C.	Natural frequency fixed but G increases
D.	Natural frequency fixed but G decreases
Answer:C
Which one of the following is an advantage of a PD controller in terms of damping and natural frequency?
A.	G remains fixed but natural frequency increases B.	G remains fixed but natural frequency decreases C.	Natural frequency fixed but G increases D.	Natural frequency fixed but G decreases