Exercise: Automatic Control Systems

Questions for: Automatic Control Systems

Assertion (A): Increasing the system gain improves steady state behaviour but may result in instability.

Reason (R): A compensator is inserted into a system to ensure specified performance.

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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The system in the given figure has
A:
good gain and phase margins
B:
good gain margin and poor phase margin
C:
poor gain and phase margins
D:
poor gain margin but good phase margin
Answer: B
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Which of the following are applications of position control systems?
A:
Control of sheet and metal thickness in hot rolling mill
B:
Missile guidance of ships
C:
Radar tracking system
D:
All of the above
Answer: D
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Consider the following statements regarding negative feedback
  1. It increases system gain
  2. It improves sensitivity
  3. It improves system stability
Which of these are not correct?
A:
all
B:
1, 2
C:
1, 3
D:
1 only
Answer: D
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The given figure shows a constant current source driving a parallel RC circuit. It is equivalent to
A:
a lag network
B:
a lead network
C:
a lag-lead network
D:
either (a) or (b)
Answer: A
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