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Automatic Control Systems

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

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

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Automatic Control Systems
A lead compensator

Speeds up the transient response
Increases the stability margin and speeds up the transient-response.
Increases the stability margin
None of these

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Automatic Control Systems
In control systems the output of sensor usually, is

Digital electrical signal
Analog electrical signal
Analog or digital electrical signal
Mechanical signal

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

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

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Automatic Control Systems
In force current analogue, mechanical mobility is analogous to

Reactance X
Admittance Y
Conductance G
Impedance Z

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

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

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