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Control Systems
The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If the gain k is increased to infinity, then damping ratio will tend to become
0.707
unity
infinite
zero
0.707
unity
infinite
zero
Answer
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Related Question
Control Systems
What will be the type of the system, if the steady state performance of control system yields a non zero finite value of the velocity error constant?
type - 0
type - 1
type - 3
type - 2
type - 0
type - 1
type - 3
type - 2
Answer
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Control Systems
A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively
0.25 and 4 rad/s
0.50 and 4 rad/s
0.25 and 2 rad/s
0.50 and 2 rad/s
0.25 and 4 rad/s
0.50 and 4 rad/s
0.25 and 2 rad/s
0.50 and 2 rad/s
Answer
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Control Systems
Which of the following is/are the characteristics of negative feedback control system?
Reduction in gain at the expense of better stability
Rejection of disturbance signals
All of these
Low sensitivity to parameter variations
Reduction in gain at the expense of better stability
Rejection of disturbance signals
All of these
Low sensitivity to parameter variations
Answer
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Control Systems
The characteristic equation of a control system is given below: The system is
marginally stable
critical stable
unstable
stable
marginally stable
critical stable
unstable
stable
Answer
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Control Systems
A box which tells the effect of inputs on control sub system is known as
Decision box.
Logical box.
Data Box.
State box.
Decision box.
Logical box.
Data Box.
State box.
Answer
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