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Automatic Control Systems

Automatic Control Systems
The sensor generally used in incremental optical encoder is

LCD
LED
Either (a) or (b)
Photodiode

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Automatic Control Systems
Bandwidth is proportional to speed of response.

False
True

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Automatic Control Systems
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.

False
True

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

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

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Automatic Control Systems
In root locus analysis the breakaway and break in points

Either lie on the real axis or occur in complex conjugate pairs
None of these
lie on the real axis
Always occur in complex conjugate pairs

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Automatic Control Systems
For any transfer function, the constant phase angle loci are

A family of circles
Neither (a) nor (b)
Either (a) or (b)
A family of straight lines

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