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Automatic Control Systems

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

Bode plot
Nyquist plot
Root locus
Nichols chart

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

1
less than 1
zero
more than 1

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Automatic Control Systems
Magnetic amplifier is used for

Voltage amplification
Frequency amplification
Current amplification
Power amplification

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

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

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

Armature resistance
Back emf
Motor friction and load
Field resistance

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Automatic Control Systems
In Bode plots the frequency at which two asymptotes meet is called corner frequency.

True
False

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