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Automatic Control Systems

Automatic Control Systems
DC tachogenerator can be used in

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

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Automatic Control Systems
Nichols chart consists of

Constant phase angle loci
Magnitude and phase angle loci in log-magnitude versus phase diagram
None of these
Constant magnitude loci

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Automatic Control Systems
Nyquist stability criterion uses open loop frequency response characteristics.

False
True

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

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

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Automatic Control Systems
In force current analogy, displacement x is analogous to

Magnetic flux linkage
Voltage
Charge
Electrostatic energy

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Automatic Control Systems
The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

False
True

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