Exercise: Automatic Control Systems

Questions for: Automatic Control Systems

If the Nyquist plot encircles the (-1 + j0) point clockwise once or more number of times, the system is unstable.
A:
True
B:
False
C:
D:
Answer: A
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In a simple on-off controller with differential gap, the magnitude of differential gap determines
A:
the level of accuracy
B:
the life of controller
C:
both (a) and (b)
D:
neither (a) nor (b)
Answer: C
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If G(s)H(s) = K (T1s + 1)/[s2 (T2s + 1)] the system stability depended an relative magnitudes of T1 and T2.
A:
True
B:
False
C:
D:
Answer: A
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N circles for a = a1, and a = a1 ± 180° n (where n = 1, 2, 3, ....) are the same.
A:
True
B:
False
C:
D:
Answer: A
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If , the number of branches of root locus are
A:
1
B:
2
C:
3
D:
4
Answer: D
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