Exercise: Automatic Control Systems

Questions for: Automatic Control Systems

Assertion (A): A synchro control transformer has nearly constant impedance across its rotor terminals.

Reason (R): Rotor of a synchro control transformer is cylindrical so as to give uniform flux distribution.

A:
Both A and R are correct and R is correct explanation of A
B:
Both A and R are correct but R is not correct explanation of A
C:
A is correct but R is wrong
D:
R is correct but A is wrong
Answer: A
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Which of the following represents constant magnitude locus for M = 1?
A:
x = -0.5
B:
x = 0
C:
x2 + y2 = 1
D:
(x + 1)2 + y2 = 1
Answer: A
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The pole-zero configuration of the given figure can be for
A:
lag compensator
B:
lead compensator
C:
lead-lag compensator
D:
series compensator
Answer: A
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The static equation of a system is The poles of this system are located at
A:
-1, -9
B:
-1, -20
C:
-4, -5
D:
-9, -20
Answer: C
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The correct sequence of events to improve system stability is
A:
insert derivative action, use negative feedback, reduce gain
B:
reduce gain, use negative feedback, insert derivative action
C:
reduce gain, insert derivative feedback, use negative feed back
D:
use negative feedback, reduce gain, insert derivative action
Answer: D
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