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Automatic Control Systems

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

more than 1
less than 1
zero
1

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

Thermistor
Strain gauge
Synchro
Load cell

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Automatic Control Systems
Nichols chart consists of

Constant magnitude loci
Constant phase angle loci
Magnitude and phase angle loci in log-magnitude versus phase diagram
None of these

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Automatic Control Systems
The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

True
False

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Automatic Control Systems
Transport lag usually exists in

Thermal systems
Pneumatic systems
Hydraulic systems and thermal systems
Thermal, hydraulic and pneumatic systems

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

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

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