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Automatic Control Systems

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

True
False

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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 addition of a pole to the open loop transfer function pulls the root locus

Towards right or left depending on the position of new pole
None of these
To the left and making the system more stable
To the right

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Automatic Control Systems
DC tachogenerator can be used in

Position control system
Neither A nor B
Speed control system
Both A and B

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

LCD
LED
Either (a) or (b)
Photodiode

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