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Automatic Control Systems

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

True
False

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Automatic Control Systems
For type 1 system the velocity lag error is

Independent of gain constant
Inversely proportional to bandwidth of system
Directly proportional to gain constant
Inversely proportional to gain constant

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

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

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Automatic Control Systems
Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.

True
False

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

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

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Automatic Control Systems
Integral control action

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

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