Exercise: Automatic Control Systems

Questions for: Automatic Control Systems

Assertion (A): Derivative control action cannot be used alone.

Reason (R): Derivative control action is effective only during transient periods.

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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The force required to initiate motion between two contacting surfaces is called
A:
coulomb friction
B:
viscous friction
C:
static friction
D:
none of the above
Answer: C
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One advantage of using polar plot is that it depicts the frequency response characteristics over the entire frequency.
A:
True
B:
False
C:
D:
Answer: A
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The gain margin of first and second order systems is infinite.
A:
True
B:
False
C:
D:
Answer: A
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If , initial and final values of i(t) are
A:
zero and 1
B:
zero and 10
C:
10 and zero
D:
70 and 80
Answer: C

Use initial and final value theorems.

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