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Automatic Control Systems

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

True
False

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Automatic Control Systems
Which of the following is open loop system?

System for controlling antirocket missiles
Respiratory system of animal
Wind screen wiper
Aqualing

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Automatic Control Systems
Magnetic amplifier is used for

Voltage amplification
Current amplification
Power amplification
Frequency amplification

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

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

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

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

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

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

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