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Automatic Control Systems

Automatic Control Systems
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.

False
True

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

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

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Automatic Control Systems
In force current analogy, displacement x is analogous to

Voltage
Charge
Electrostatic energy
Magnetic flux linkage

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

True
False

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Automatic Control Systems
DC tachogenerator can be used in

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

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Automatic Control Systems
Robotic manipulator arms mostly use

Electric motor actuator
Hydraulic actuator
None of these
Pneumatic actuator

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