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Electronics and Communication Engineering - Automatic Control Systems

Exercise : Automatic Control Systems - Section 7
31.

Assertion (A): When the performance of a stable second order system is improved by a PID controller, the system may become unstable.

Reason (R): PID controller increases the order of the system to 3.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
R is correct but A is wrong
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
The root locus branches
start from open loop poles and terminate at zeros
start from open loop zeros and terminate at poles
may start from pole or zero and terminate at another pole or zero
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
In force voltage analogy, displacement is analogous to
current
voltage
charge
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
M circles are symmetrical with respect to real axis.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
For the system with , the maximum resonance peak is
4
4/3
2
2/3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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