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Automatic Control Systems

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

Either (a) or (b)
LCD
Photodiode
LED

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Automatic Control Systems
Which of the following is open loop system?

Aqualing
Wind screen wiper
Respiratory system of animal
System for controlling antirocket missiles

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Automatic Control Systems
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.

True
False

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Automatic Control Systems
The distance of poles from origin depends on

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

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

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

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

Thermistor
Synchro
Load cell
Strain gauge

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