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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
Robotic manipulator arms mostly use

Electric motor actuator
Pneumatic actuator
Hydraulic actuator
None of these

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Automatic Control Systems
In Bode plots the frequency at which two asymptotes meet is called corner frequency.

False
True

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Automatic Control Systems
The effect of adding poles and zeros can be determined quickly by

Bode plot
Nyquist plot
Nichols chart
Root locus

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Automatic Control Systems
Nyquist stability criterion uses open loop frequency response characteristics.

True
False

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Automatic Control Systems
If poles lie in first quadrant, damping ratio is

Zero
More than 1
1
less than 1

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