129. For what values of a does the system shown in figure have a zero steady s`tate error (i.e. Lim t e(t)) for a step input?

129. For what values of a does the system shown in figure have a zer

1.	129. For what values of a does the system shown in figure have a zero steady s`tate error (i.e. Lim t e(t)) for a step input?
A.	a = 0
B.	a > 0
C.	a 4
D.	For no value of a
Answer» B. a > 0

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129. For what values of a does the system shown in figure have a zero steady s`tate error (i.e. Lim t e(t)) for a step input?

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