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Automatic Control Systems

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
M circles are symmetrical with respect to

M = 1 straight line and imaginary axis
M = 1 straight line
Real and imaginary axis
M = 1 straight line and real axis

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

False
True

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Automatic Control Systems
Which dc servomotor requires strongest permanent magnet?

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

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

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

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

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

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