CONTROL SYSTEMS QUIZ

Consider a network function H(s) = 2(s+3)/{(s+2)(s+4)}. What is the steady state response due to step input?

1/2

1

3/4

4/3

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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+1)2/s

s/(s+1)2

s/(s+1)

1/s(s+1)2

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The impulse response of a linear system is e-t, (t > 0). The corresponding transfer function is

1/s(s+1)

1/(s+1)

1/s

s/(s+1)

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The system function N(s) = V(s)/I(s) = (s+3)/(4s+5). The system is initially at rest. If the excitation i(t) is a unit step, which of the following is the final value?

1

0

3/5

1/4

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A transfer function is given as The steady state sinusoidal response will become zero at a frequency response of

3 rad/s

4 rad/s

2 rad/s

9 rad/s

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Which of the following controller has sluggish response?

both 2 and 3

proportional controller

integral controller

derivative controller

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Settling time for 5% tolerance band is -------------

5T.

3T.

4T.

2T.

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When the polynomial is Routh Hurwitz,

the roots of function have real parts which are to be zero/negative.

the function is not real.

none of these.

all zeroes lie in the right half of the s-plane.

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The maximum phase lag occurs at the ------------------- of the two corner frequencies?

geometric mean

None of these

arithmetic mean

either 1 or 2

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The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its open loop transfer function is

(2s+2)/(s+1)²

(2s+2)/s²

(2s+1)/s²

(2s+1)/(s+1)²

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