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Automatic Control Systems

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

Either (a) or (b)
LED
LCD
Photodiode

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Automatic Control Systems
Transport lag usually exists in

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

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Automatic Control Systems
In Bode plots the frequency at which two asymptotes meet is called corner frequency.

True
False

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

False
True

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Automatic Control Systems
A system is highly oscillatory if

Gain margin is high and phase margin is 180°
Gain margin is high
Gain margin is close to 1 or phase margin is zero
Gain margin is close to 1

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Automatic Control Systems
DC tachogenerator can be used in

Speed control system
Both A and B
Position control system
Neither A nor B

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MORE MCQ ON Automatic Control Systems

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