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Automatic Control Systems

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

LCD
LED
Photodiode
Either (a) or (b)

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

Charge
Electrostatic energy
Magnetic flux linkage
Voltage

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Automatic Control Systems
Robotic manipulator arms mostly use

Electric motor actuator
None of these
Hydraulic actuator
Pneumatic actuator

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Automatic Control Systems
A lead compensator

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

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Automatic Control Systems
The distance of poles from origin depends on

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

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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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