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Automatic Control Systems

Automatic Control Systems
DC tachogenerator can be used in

Speed control system
Both A and B
Position control system
Neither A nor B

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Automatic Control Systems
Magnetic amplifier is used for

Frequency amplification
Power amplification
Voltage amplification
Current amplification

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Automatic Control Systems
Which dc servomotor requires strongest permanent magnet?

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

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

More than 1
less than 1
1
Zero

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Automatic Control Systems
For any transfer function, the constant phase angle loci are

A family of straight lines
Neither (a) nor (b)
A family of circles
Either (a) or (b)

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Automatic Control Systems
Bandwidth is proportional to speed of response.

True
False

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