A unity-feedback control system has the open-loop transfer function G(s)=If input to the system in a unit ramp, then steady state error will be

1.  0

2.  0.5

3.  2

4.   infinity

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4
Correct Answer :

0


Explanation :
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The steady state error of a stable type 0 unity feedback system, for a unit step function is

1.  0

2.  

3.  ∞

4.  

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4
Correct Answer :


Explanation :
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The output of a linear time invariant control system is C(t) for a certain input r(t). If r(t) is modified by passing it through a block whose transfer function is e-s and then applied to the system, the modified output of the system would be

1.  

2.  

3.  v(t-1)u(t-1)

4.  c(t)u(t-1)

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4
Correct Answer :

c(t)u(t-1)


Explanation :
No Explanation available for this question

For what values of ‘a’ does the system shown in the figure have zero steady state error

1.  a=0

2.  a=2

3.  a=4

4.   for no values of ‘a’

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4
Correct Answer :

a=0


Explanation :
No Explanation available for this question

The transfer function of a system is G(s)=. For a unit-step input to the system, the approximate setting time for 2% criterion is

1.  100 sec

2.  4 sec

3.  1 sec

4.   0.01 sec

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4
Correct Answer :

4 sec


Explanation :
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The characterstic polynomial of a system is, q(s)=2s5+s4+4s3+2s2+2s+1. The system is

1.  stable

2.  marginally stable

3.  unstable

4.   oscillatory

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4
Correct Answer :

oscillatory


Explanation :
No Explanation available for this question

A unit feedback system has open-loop transfer function G(s)={}. The peak overshoot in the step-input response of the system is approximately equal to

1.  5%

2.  10%

3.  15%

4.   20%

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4
Correct Answer :

10\%


Explanation :
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The Nyquist plot of a loop transfer function G(jω) H(jω) of a system enclose the (-1,j0) point

1.  lessthan zero

2.  zero

3.  greaterthan zero

4.   infinity

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4
Correct Answer :

lessthan zero


Explanation :
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By a suitable choice of the scalar parameter K, the system shown in the figure, can be made to oscillate continuously at a frequency of

1.  1 rad/s

2.  2 rad/s

3.  4 rad/s

4.   8 rad/s

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4
Correct Answer :

4 rad/s


Explanation :
No Explanation available for this question

The open-loop transfer function of a unity feedback control system is G(s)=For K>6 , the stability characterstic of the open-loop and closed-loop configurations of the system are respectively

1.  stable and unstable

2.  stable and stable

3.  unstable and stable

4.   unstable and unstable

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4
Correct Answer :

unstable and stable


Explanation :
No Explanation available for this question
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