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Automatic Control Systems

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

1
More than 1
less than 1
Zero

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

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Automatic Control Systems
A lead compensator

Increases the stability margin and speeds up the transient-response.
Increases the stability margin
Speeds up the transient response
None of these

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Automatic Control Systems
A conditionally stable system is stable for the value of gain between two critical values. It is unstable if

Both A and B
The gain is increased beyond upper critical value
None of these
The gain is decreased below lower critical value

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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 force current analogue, mechanical mobility is analogous to

Reactance X
Impedance Z
Admittance Y
Conductance G

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