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Automatic Control Systems
Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.
False
True
False
True
Answer
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Automatic Control Systems
Integral control action
Removes offset
Neither (a) nor (b)
Both (a) and (b)
May lead to oscillatory response
Removes offset
Neither (a) nor (b)
Both (a) and (b)
May lead to oscillatory response
Answer
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Automatic Control Systems
Robotic manipulator arms mostly use
Hydraulic actuator
None of these
Pneumatic actuator
Electric motor actuator
Hydraulic actuator
None of these
Pneumatic actuator
Electric motor actuator
Answer
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Automatic Control Systems
Nichols chart consists of
Constant magnitude loci
Magnitude and phase angle loci in log-magnitude versus phase diagram
Constant phase angle loci
None of these
Constant magnitude loci
Magnitude and phase angle loci in log-magnitude versus phase diagram
Constant phase angle loci
None of these
Answer
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Automatic Control Systems
If poles lie in first quadrant, damping ratio is
1
less than 1
Zero
More than 1
1
less than 1
Zero
More than 1
Answer
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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
1, 2 and 3
1 and 2
All
3 and 4
1, 2 and 3
1 and 2
All
3 and 4
Answer
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