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Automatic Control Systems

Automatic Control Systems
DC tachogenerator can be used in

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

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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.

True
False

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Automatic Control Systems
M circles are symmetrical with respect to

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

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

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

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Automatic Control Systems
If the poles lie in second quadrant, damping ratio is

zero
1
less than 1
more than 1

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

Integral
Proportional
Derivative
Both (b) and (c)

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