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Automatic Control Systems

Automatic Control Systems
If the poles lie in second quadrant, damping ratio is

1
more than 1
less than 1
zero

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Automatic Control Systems
The permanent magnet field system of brushless dc servo- motor is generally on

Either (a) or (b)
Partly on stator and partly on rotor
Stator
Rotor

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Automatic Control Systems
Transport lag usually exists in

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

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Automatic Control Systems
The relative stability of a system is given by

Phase margin alone
Both phase and gain margins
Either (a) or (b)
Gain margin alone

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Automatic Control Systems
The distance of poles from origin depends on

Both A and B
Neither A nor B
Damping ratio
Uqndamped natural frequency

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

LED
LCD
Photodiode
Either (a) or (b)

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MORE MCQ ON Automatic Control Systems

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