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Automatic Control Systems

Automatic Control Systems
Nichol’s chart is symmetric about – 180° axis.

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
Nyquist stability criterion uses open loop frequency response characteristics.

False
True

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Automatic Control Systems
The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

True
False

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

Either (a) or (b)
LCD
LED
Photodiode

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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
Neither (a) nor (b)
Both (a) and (b)

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