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Automatic Control Systems

Automatic Control Systems
If the poles lie in second quadrant, damping ratio is

more than 1
less than 1
1
zero

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Automatic Control Systems
In root locus analysis the breakaway and break in points

None of these
lie on the real axis
Always occur in complex conjugate pairs
Either lie on the real axis or occur in complex conjugate pairs

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Automatic Control Systems
The poles with greater displacement from the real axis correspond to

Unbounded output
Higher frequencies of oscillations
Lower frequencies of oscillations
Stable response

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Automatic Control Systems
A lead compensator

Increases the stability margin
Speeds up the transient response
Increases the stability margin and speeds up the transient-response.
None of these

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Automatic Control Systems
Nichols chart consists of

None of these
Magnitude and phase angle loci in log-magnitude versus phase diagram
Constant phase angle loci
Constant magnitude loci

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Automatic Control Systems
The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

False
True

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