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Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?
1
3
2
0
1
3
2
0
Answer
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Related Question
Control Systems
When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is
0.500.
0.693.
1.386.
2.000.
0.500.
0.693.
1.386.
2.000.
Answer
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Control Systems
Weighting function is in terms of -----------------
Laplace transform of the parabolic response
Laplace transform of the impulse response
Laplace transform of the step response
Laplace transform of the ramp response
Laplace transform of the parabolic response
Laplace transform of the impulse response
Laplace transform of the step response
Laplace transform of the ramp response
Answer
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Control Systems
The second order system defined by 25/(s2 + 5s + 25) is given a step input. The time taken for the output to settle with in 2 % of input is
2 sec.
1.6 sec.
1.2 sec.
0.4 sec.
2 sec.
1.6 sec.
1.2 sec.
0.4 sec.
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
Given the Laplace transform of f(t) = F(s), the Laplace transform of (f(t)e-at) is equal to
e-as*F(s)
eas*F(s)
F(s+a)
F(s)/(s+a)
e-as*F(s)
eas*F(s)
F(s+a)
F(s)/(s+a)
Answer
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