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Automatic Control Systems

Automatic Control Systems
Integral control action

Neither (a) nor (b)
Both (a) and (b)
Removes offset
May lead to oscillatory response

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Automatic Control Systems
Which of the following can be used as a rotating amplifier in a control system? 1. Amplidyne 2. Separately excited dc generator 3. Synchro 4. Self excited dc generator

All
1, 2 and 3
1 and 2
3 and 4

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Automatic Control Systems
In root locus analysis the breakaway and break in points

lie on the real axis
Either lie on the real axis or occur in complex conjugate pairs
None of these
Always occur in complex conjugate pairs

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

more than 1
1
zero
less than 1

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Automatic Control Systems
The effect of adding poles and zeros can be determined quickly by

Nichols chart
Nyquist plot
Bode plot
Root locus

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Automatic Control Systems
M circles are symmetrical with respect to

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

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