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Automatic Control Systems

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

Either (a) or (b)
LED
Photodiode
LCD

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Automatic Control Systems
In root locus analysis the breakaway and break in points

Either lie on the real axis or occur in complex conjugate pairs
Always occur in complex conjugate pairs
lie on the real axis
None of these

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Automatic Control Systems
Robotic manipulator arms mostly use

None of these
Hydraulic actuator
Electric motor actuator
Pneumatic actuator

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Automatic Control Systems
Lag compensation permits a high gain at low frequencies.

False
True

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

True
False

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Automatic Control Systems
In a simple on-off controller with differential gap, the magnitude of differential gap determines

The life of controller
The level of accuracy
Both (a) and (b)
Neither (a) nor (b)

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