CONTROL SYSTEMS QUIZ

The step response of the system described by the differential equation will be

(1/6)*(1-e-6t).

e6t.

e-3t u(t).

non of above.

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A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is

180°

-90°

-180°

90°

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Lowest critical frequency is due to pole and it may be present at the origin or nearer to the origin, then the type of network is

RC.

Any of the above.

RL.

LC.

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Which of the following controller has sluggish response?

proportional controller

both 2 and 3

derivative controller

integral controller

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The unit step error coefficient of a system with unity feedback is

0.

infinity.

1.

1/6.

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Which of the following is the correct expression for the transfer function of an electrical RC phase lag compensating network?

C/(1+RCS)

1/(1+RCS)

RC/(1+RCS)

RCS/(1+RCS)

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What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

3

0

1

2

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If a circuit consists of two mass elements, two spring elements and four friction elements. Find the order of transfer function?

6

2

4

12

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The impulse response of an initally relaxed linear system is e-2tu(t). To produce a response of te-2tu(t), the input must be equal to

e-2tu(t).

(0.5)e-2tu(t).

2e-tu(t).

e-tu(t).

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Poles and zeros are arranged alternatively on negative real axis, then type of network is/are

RC network.

RL network.

LC network.

Both 2 and 3.

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