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Automatic Control Systems

Automatic Control Systems
Which control action can never be used alone?

Both (b) and (c)
Proportional
Derivative
Integral

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

Armature resistance
Motor friction and load
Field resistance
Back emf

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Automatic Control Systems
Temperature is analogous to

Charge
None of these
Flux
Voltage

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Automatic Control Systems
For type 1 system the velocity lag error is

Inversely proportional to bandwidth of system
Directly proportional to gain constant
Inversely proportional to gain constant
Independent of gain constant

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

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

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

1
more than 1
zero
less than 1

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