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Automatic Control Systems

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

Zero
less than 1
1
More than 1

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Automatic Control Systems
Which of the following is open loop system?

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

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

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

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Automatic Control Systems
The addition of a pole to the open loop transfer function pulls the root locus

To the left and making the system more stable
To the right
None of these
Towards right or left depending on the position of new pole

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Automatic Control Systems
Nichol’s chart is symmetric about – 180° axis.

True
False

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Automatic Control Systems
In control systems the output of sensor usually, is

Mechanical signal
Digital electrical signal
Analog or digital electrical signal
Analog electrical signal

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