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Automatic Control Systems

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

less than 1
zero
1
more than 1

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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

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

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

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

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Automatic Control Systems
Integral control action

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

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Automatic Control Systems
Magnetic amplifier is used for

Power amplification
Current amplification
Frequency amplification
Voltage amplification

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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 right
Towards right or left depending on the position of new pole
To the left and making the system more stable

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