CONTROL SYSTEMS QUIZ

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

12

2

4

6

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A unity feed back system has forward transfer function The range of k for the system to be stable is

0 < k < 3900.

None of these

0 < k < 390.

0 < k < 39.

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A property of phase lead compensation is that the

rise time of closed loop system is reduced.

gain margin is reduced.

overshoot is increased.

bandwidth of closed loop system is reduced.

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For a unity feedback control system open loop transfer function then position error constant is

0.

40.

infinity.

20.

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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

2e-tu(t).

(0.5)e-2tu(t).

e-2tu(t).

e-tu(t).

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Lead network is used to

improve steady state response.

improve transient response.

increase bandwidth.

both A and C.

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Find the type of the system given by

1.

4.

2.

3.

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The poles of the second order system are at -3 ± j4. The damping ratio of the system is

4/5

3/5

3/4

3/7

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When writing a transfer function which of the following loops are not valid loops?

Both 1 and 2.

Neither 1 nor 2.

Self loops at output node.

Self loops at input node.

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A function of one or more variables which conveys information about the nature of physical phenomenon is called

noise.

system.

interference.

signal.

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