Exercise: Automatic Control Systems

Questions for: Automatic Control Systems

A proportional controller is basically
A:
an amplifier with adjustable gain
B:
an integrating amplifier
C:
an amplifier with infinite gain
D:
an amplifier with almost zero gain
Answer: A
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For the transfer function , the polar plot a is
A:
semi circle
B:
circle
C:
spiral
D:
none of the above
Answer: C
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A system has high gain and phase margin. The system is
A:
very stable
B:
sluggish
C:
very stable and sluggish
D:
oscillatory
Answer: C
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The slope of log magnitude curve changes by - 40 dB/decade at a certain frequency and the error between asymptote and actual curve is positive. This means that
A:
a double pole is present
B:
a pair of complex conjugate poles is present
C:
either (a) or (b)
D:
neither (a) nor (b)
Answer: B
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The capacitance of a gas pressure vessel is defined as
A:
B:
C:
(change in gas stored) x (change in gas pressure)
D:
none of the above
Answer: A
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