Exercise: Automatic Control Systems

Questions for: Automatic Control Systems

Assertion (A): In liquid system the ratio of change in liquid level to change in flow rate is called resistance of liquid flow.

Reason (R): In liquid level systems the ratio of change in liquid stored in a tank to the change in head is called capacitance of tank.

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: B
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While forming Routh's array, the situation of a row of zeros indicates that the system
A:
has symmetrically located roots
B:
is not sensitive to variations in gain
C:
is stable
D:
is unstable
Answer: A
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For the function G(s) H(s) = the phase cross-over frequency is
A:
0.5 rad/sec
B:
0.707 rad/sec
C:
1.732 rad/sec
D:
2 rad/sec
Answer: B
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Nyquist stability criterion is based on a theorem from the theory of complex variables.
A:
True
B:
False
C:
D:
Answer: A
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Consider the following systems
System I,
System II,
where C(s) is the output and R(s) is the input of these systems
A:
System I has larger bandwidth and faster speed of response than System II
B:
System II has larger bandwidth and faster speed of response than System I
C:
System I has larger bandwidth but System II has faster speed of response
D:
System II has larger bandwidth but System I has faster speed of response
Answer: A
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