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Automatic Control Systems

Automatic Control Systems
Lag compensation permits a high gain at low frequencies.

False
True

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Automatic Control Systems
Which dc servomotor requires strongest permanent magnet?

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

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

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

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Automatic Control Systems
Which control action can never be used alone?

Both (b) and (c)
Integral
Derivative
Proportional

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

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

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Automatic Control Systems
M circles are symmetrical with respect to

M = 1 straight line and real axis
Real and imaginary axis
M = 1 straight line and imaginary axis
M = 1 straight line

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