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Electronics and Communication Engineering - Automatic Control Systems

Exercise : Automatic Control Systems - Section 7
41.
For stable network the real parts of poles and zeros of driving point functions must be
negative
negative or zero
zero
positive
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
A compensating network has . If it is a phase lag circuit the value of a should be
0
between 0 and 1
1
more than 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Consider the following expressions which indicate the step or impulse response of an initially relaxed system
  1. [5 - 4 e-2t] u(t)
  2. [e-2t + 5] u(t)
  3. d(t) + 8 e-2t u(t)
  4. d(t) + 4 e-2t u(t)
Those which correspond to the step and impulse response of the same system include
1 and 3
1 and 4
2 and 4
2 and 3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
If Z is the number of zeros of 1 + G(s) H(s) in the right half s plane. N is the number of clockwise encircle elements of (-1 + jo) point. P is the number of poles of G(s) H(s) in right half s plane. The Nyquist stability criterion can be expressed as
Z = N + P
Z = P/N
Z = N - P
Z = PN
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
The given figure shows a control system. The maximum value of gain for which the system is stable is
3
3
4
5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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