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Automatic Control Systems

Automatic Control Systems
Integral control action

May lead to oscillatory response
Neither (a) nor (b)
Removes offset
Both (a) and (b)

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

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

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

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Automatic Control Systems
A conditionally stable system is stable for the value of gain between two critical values. It is unstable if

None of these
The gain is increased beyond upper critical value
The gain is decreased below lower critical value
Both A and B

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Automatic Control Systems
The sensor generally used in incremental optical encoder is

LCD
LED
Either (a) or (b)
Photodiode

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Automatic Control Systems
A lead compensator

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

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