Consider the following statements:For a type-1 and a unity feedback system, having unity gain in the forward path1. positional error constant Kp is equal to zero2. acceleration error constant Ka is equal to zero3. steady-state error ess per unit-step displacement input is equal to 0Which of the above statements are correct?

Consider the following statements:For a type-1 and a unity feedback sy

1.	Consider the following statements:For a type-1 and a unity feedback system, having unity gain in the forward path1. positional error constant Kp is equal to zero2. acceleration error constant Ka is equal to zero3. steady-state error ess per unit-step displacement input is equal to 0Which of the above statements are correct?
A.	1, 2 and 3
B.	1 and 2 only
C.	2 and 3 only
D.	1 and 3 only
Answer» D. 1 and 3 only

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