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Automatic Control Systems

Automatic Control Systems
The distance of poles from origin depends on

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

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Automatic Control Systems
In a simple on-off controller with differential gap, the magnitude of differential gap determines

The life of controller
Neither (a) nor (b)
The level of accuracy
Both (a) and (b)

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Automatic Control Systems
Lag compensation permits a high gain at low frequencies.

True
False

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Automatic Control Systems
Integral control action

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

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Automatic Control Systems
Which dc servomotor requires strongest permanent magnet?

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

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

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

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