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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.

False
True

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Automatic Control Systems
M circles are symmetrical with respect to

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

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Automatic Control Systems
In the field controlled motor the entire damping comes from

Back emf
Field resistance
Motor friction and load
Armature resistance

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Automatic Control Systems
Transport lag usually exists in

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

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Automatic Control Systems
The effect of adding poles and zeros can be determined quickly by

Root locus
Nyquist plot
Bode plot
Nichols chart

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

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

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