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Automatic Control Systems

Automatic Control Systems
The permanent magnet field system of brushless dc servo- motor is generally on

Rotor
Either (a) or (b)
Stator
Partly on stator and partly on rotor

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Automatic Control Systems
DC tachogenerator can be used in

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

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Automatic Control Systems
Temperature is analogous to

Voltage
Charge
Flux
None of these

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Automatic Control Systems
Magnetic amplifier is used for

Power amplification
Frequency amplification
Voltage amplification
Current amplification

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Automatic Control Systems
Nichol’s chart is symmetric about – 180° axis.

False
True

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Automatic Control Systems
Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.

True
False

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