Electronics and Communication Engineering - Automatic Control Systems

Exercise : Automatic Control Systems - Section 8
1.
For a second order system with 0 < ξ < 1, the angle which poles make with negative real axis is
sin-1 ξ
cos-1 ξ
tan-1 ξ
cot-1 ξ
Explanation:
No answer description is available. Let's discuss.

2.
The resolution of a wire wound potentiometer is about
0.001%
0.1%
1%
5%
Explanation:
No answer description is available. Let's discuss.

3.
Consider the following statements
1. The effect of feedback is to reduce system error
2. Feedback increases the system gain at one frequency but reduces the system gain as another frequency
3. Feedback can cause an originally stable system to become unstable
Which of the above statements are correct?
1, 2, 3
1, 2
2, 3
1, 3
Explanation:
No answer description is available. Let's discuss.

4.
M circles are symmetrical with respect to
real and imaginary axis
M = 1 straight line and real axis
M = 1 straight line and imaginary axis
M = 1 straight line