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Automatic Control Systems

Automatic Control Systems
Integral control action

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

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

True
False

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Automatic Control Systems
A system is highly oscillatory if

Gain margin is high and phase margin is 180°
Gain margin is close to 1
Gain margin is close to 1 or phase margin is zero
Gain margin is high

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Automatic Control Systems
Robotic manipulator arms mostly use

Hydraulic actuator
Electric motor actuator
Pneumatic actuator
None of these

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Automatic Control Systems
The relative stability of a system is given by

Either (a) or (b)
Phase margin alone
Both phase and gain margins
Gain margin alone

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