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Automatic Control Systems

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

more than 1
zero
less than 1
1

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Automatic Control Systems
In the field controlled motor the entire damping comes from

Field resistance
Motor friction and load
Back emf
Armature resistance

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Automatic Control Systems
Which of the following can be used as a rotating amplifier in a control system? 1. Amplidyne 2. Separately excited dc generator 3. Synchro 4. Self excited dc generator

All
1 and 2
1, 2 and 3
3 and 4

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Automatic Control Systems
The distance of poles from origin depends on

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

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Automatic Control Systems
Which of the following is open loop system?

Respiratory system of animal
System for controlling antirocket missiles
Aqualing
Wind screen wiper

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Automatic Control Systems
The addition of a pole to the open loop transfer function pulls the root locus

To the left and making the system more stable
None of these
To the right
Towards right or left depending on the position of new pole

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