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Automatic Control Systems

Automatic Control Systems
DC tachogenerator can be used in

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

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

more than 1
1
zero
less than 1

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

Either (a) or (b)
Photodiode
LED
LCD

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Automatic Control Systems
Which control action can never be used alone?

Derivative
Both (b) and (c)
Integral
Proportional

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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
In force current analogue, mechanical mobility is analogous to

Reactance X
Admittance Y
Impedance Z
Conductance G

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