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Automatic Control Systems

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

more than 1
1
less than 1
zero

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

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

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Automatic Control Systems
Integral control action

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

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Automatic Control Systems
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.

True
False

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Automatic Control Systems
The effect of adding poles and zeros can be determined quickly by

Bode plot
Nyquist plot
Nichols chart
Root locus

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

Integral
Proportional
Both (b) and (c)
Derivative

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