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Automatic Control Systems

Automatic Control Systems
Integral control action

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

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Automatic Control Systems
Nichols chart consists of

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

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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.

False
True

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Automatic Control Systems
In force current analogue, mechanical mobility is analogous to

Admittance Y
Reactance X
Impedance Z
Conductance G

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

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

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Automatic Control Systems
Which dc servomotor requires strongest permanent magnet?

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

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