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Automatic Control Systems

Automatic Control Systems
Nichol’s chart is symmetric about – 180° axis.

False
True

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

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

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Automatic Control Systems
Lag compensation permits a high gain at low frequencies.

True
False

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

more than 1
less than 1
zero
1

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Automatic Control Systems
For type 1 system the velocity lag error is

Directly proportional to gain constant
Inversely proportional to gain constant
Inversely proportional to bandwidth of system
Independent of gain constant

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Automatic Control Systems
Which control action can never be used alone?

Derivative
Proportional
Both (b) and (c)
Integral

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