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Electronics and Communication Engineering - Automatic Control Systems

Exercise : Automatic Control Systems - Section 7
16.
The Nyquist plot in the given figure is for G(s) H(s) =
Answer: Option
Explanation:
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17.
For a factor the log
is a straight line with slope 20 dB/decade
is a straight line with slope 0 dB/decade
is a straight line with slope - 20 dB/decade
is a straight line with slope - 40 dB/decade
Answer: Option
Explanation:
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18.
The number of stator field windings in an ac tachometer are
1
2
3
4
Answer: Option
Explanation:
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19.
The radius of constant N circle for N = 1 is
2
2
1
Answer: Option
Explanation:
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20.
In using Nyquist stability criterion it is not necessary to determine closed loop poles.
True
False
Answer: Option
Explanation:
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