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Control Systems
A linear time invariant system, initially at rest when subjected to a unit step input gave response c(t) = te-t (t ≥ 0). The transfer function of the system is
s/(s+1)
1/s(s+1)2
s/(s+1)2
(s+1)2/s
s/(s+1)
1/s(s+1)2
s/(s+1)2
(s+1)2/s
Answer
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Related Question
Control Systems
Find the conditions for the system to be stable?
Gain margin and phase margins are negative
Gain margin is positive but phase margin is negative
Gain margin and phase margins are positive
Gain margin is negative but phase margin is positive
Gain margin and phase margins are negative
Gain margin is positive but phase margin is negative
Gain margin and phase margins are positive
Gain margin is negative but phase margin is positive
Answer
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Control Systems
The closed loop transfer function of a system is 25/(s² + 25). The settling time of the system is
1 sec
∞ sec
25 sec
5 sec
1 sec
∞ sec
25 sec
5 sec
Answer
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Control Systems
The value of gain margin of the system having G ( s )H ( s ) = 8 / ( s + 2 )3 is
4.
8.
6.
2.
4.
8.
6.
2.
Answer
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Control Systems
Negative feedback in a closed loop control system
reduces gain.
improves disturbance rejection.
reduces sensitivity to parameter variation.
All of these
reduces gain.
improves disturbance rejection.
reduces sensitivity to parameter variation.
All of these
Answer
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Control Systems
A function of one or more variables which conveys information about the nature of physical phenomenon is called
noise.
signal.
system.
interference.
noise.
signal.
system.
interference.
Answer
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