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Automatic Control Systems

Automatic Control Systems
Which of the following is used to obtain output position in a position control system?

Strain gauge
Synchro
Thermistor
Load cell

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

False
True

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

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

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Automatic Control Systems
In Bode plots the frequency at which two asymptotes meet is called corner frequency.

False
True

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

Derivative
Proportional
Both (b) and (c)
Integral

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

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

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