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Automatic Control Systems

Automatic Control Systems
The relative stability of a system is given by

Gain margin alone
Phase margin alone
Either (a) or (b)
Both phase and gain margins

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

Voltage
Charge
Magnetic flux linkage
Electrostatic energy

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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
Which of the following is open loop system?

Respiratory system of animal
Wind screen wiper
System for controlling antirocket missiles
Aqualing

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Automatic Control Systems
A system is highly oscillatory if

Gain margin is close to 1 or phase margin is zero
Gain margin is close to 1
Gain margin is high
Gain margin is high and phase margin is 180°

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Automatic Control Systems
Robotic manipulator arms mostly use

Hydraulic actuator
Electric motor actuator
Pneumatic actuator
None of these

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