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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.
2.000.
0.693.
1.386.
0.500.
2.000.
0.693.
1.386.
Answer
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Related Question
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
infinite
zero
0.707
unity
infinite
zero
0.707
unity
Answer
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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 - 3
type - 1
type - 2
type - 0
type - 3
type - 1
type - 2
type - 0
Answer
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Control Systems
A controller transfer function is given by . What is its nature and parameter?
lag compensator, β = 2
lag compensator, β = 10
lead compensator, α = 0.2
lead compensator, α = 0.1
lag compensator, β = 2
lag compensator, β = 10
lead compensator, α = 0.2
lead compensator, α = 0.1
Answer
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Control Systems
A linear time invariant system has an impulse response e2t for t > 0 . If initial condition are 0 and input is e3t, the output for t > 0 is
e2t + e3t.
e3t - e2t.
e2t - e3t.
e5t.
e2t + e3t.
e3t - e2t.
e2t - e3t.
e5t.
Answer
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Control Systems
A transfer function has a zero at s = -1 and poles at s = -1 ± j1. The multiplier being unity, if the input is step function, the steady state response is given by
2∠90°
1∠0°
0.5∠10°
0.5∠0°
2∠90°
1∠0°
0.5∠10°
0.5∠0°
Answer
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