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Automatic Control Systems

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

Field resistance
Motor friction and load
Back emf
Armature resistance

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Automatic Control Systems
In control systems the output of sensor usually, is

Analog or digital electrical signal
Digital electrical signal
Analog electrical signal
Mechanical signal

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Automatic Control Systems
Nichols chart consists of

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

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Automatic Control Systems
Temperature is analogous to

None of these
Voltage
Flux
Charge

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Automatic Control Systems
Robotic manipulator arms mostly use

Electric motor actuator
Hydraulic actuator
None of these
Pneumatic actuator

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

LCD
Photodiode
Either (a) or (b)
LED

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