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Automatic Control Systems

Automatic Control Systems
Which of the following is used to obtain output position in a position control system?

Synchro
Load cell
Strain gauge
Thermistor

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

True
False

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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
In a simple on-off controller with differential gap, the magnitude of differential gap determines

Both (a) and (b)
The life of controller
The level of accuracy
Neither (a) nor (b)

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Automatic Control Systems
The relative stability of a system is given by

Either (a) or (b)
Phase margin alone
Gain margin alone
Both phase and gain margins

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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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