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Automatic Control Systems

Automatic Control Systems
Which of the following is used to obtain output position in a position control system?

Synchro
Strain gauge
Load cell
Thermistor

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Automatic Control Systems
For any transfer function, the constant phase angle loci are

A family of straight lines
A family of circles
Neither (a) nor (b)
Either (a) or (b)

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Automatic Control Systems
Integral control action

Neither (a) nor (b)
Removes offset
Both (a) and (b)
May lead to oscillatory response

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

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

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

Motor friction and load
Field resistance
Back emf
Armature resistance

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

Voltage
Charge
Electrostatic energy
Magnetic flux linkage

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