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Automatic Control Systems

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

Bode plot
Nichols chart
Root locus
Nyquist plot

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Automatic Control Systems
A lead compensator

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

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Automatic Control Systems
Transport lag usually exists in

Thermal systems
Hydraulic systems and thermal systems
Thermal, hydraulic and pneumatic systems
Pneumatic systems

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Automatic Control Systems
The addition of a pole to the open loop transfer function pulls the root locus

To the left and making the system more stable
Towards right or left depending on the position of new pole
None of these
To the right

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Automatic Control Systems
In the field controlled motor the entire damping comes from

Field resistance
Armature resistance
Motor friction and load
Back emf

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

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

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