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Automatic Control Systems

Automatic Control Systems
The distance of poles from origin depends on

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

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

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

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

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

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

less than 1
more than 1
1
zero

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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
Robotic manipulator arms mostly use

Hydraulic actuator
Pneumatic actuator
None of these
Electric motor actuator

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