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Automatic Control Systems

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

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

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Automatic Control Systems
The poles with greater displacement from the real axis correspond to

Stable response
Unbounded output
Higher frequencies of oscillations
Lower frequencies of oscillations

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Automatic Control Systems
Which dc servomotor requires strongest permanent magnet?

Slotted armature
Surface wound armature
Surface wound with stationary rotor
Either A or B

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Automatic Control Systems
In force current analogue, mechanical mobility is analogous to

Impedance Z
Conductance G
Reactance X
Admittance Y

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

Charge
Voltage
Magnetic flux linkage
Electrostatic energy

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Automatic Control Systems
Integral control action

Neither (a) nor (b)
Both (a) and (b)
Removes offset
May lead to oscillatory response

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