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Automatic Control Systems

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

less than 1
1
zero
more than 1

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Automatic Control Systems
In force current analogue, mechanical mobility is analogous to

Admittance Y
Impedance Z
Conductance G
Reactance X

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

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

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Automatic Control Systems
A system is highly oscillatory if

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

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Automatic Control Systems
Integral control action

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

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Automatic Control Systems
The distance of poles from origin depends on

Neither A nor B
Both A and B
Damping ratio
Uqndamped natural frequency

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