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Automatic Control Systems

Automatic Control Systems
In force current analogy, displacement x is analogous to

Voltage
Electrostatic energy
Charge
Magnetic flux linkage

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Automatic Control Systems
Lag compensation permits a high gain at low frequencies.

False
True

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Automatic Control Systems
The sensor generally used in incremental optical encoder is

LCD
Photodiode
LED
Either (a) or (b)

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Automatic Control Systems
The distance of poles from origin depends on

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

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Automatic Control Systems
Nichols chart consists of

Constant phase angle loci
None of these
Constant magnitude loci
Magnitude and phase angle loci in log-magnitude versus phase diagram

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

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

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