CONTROL SYSTEMS QUIZ

The characteristic equation for closed loop system is given as . The value of k for which the system becomes just stable is

8

2

4

6

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A system is stable for (where GM = Gain Margin and PM = Phase Margin):

GM -ve.

GM and PM both -ve.

PM - ve.

GM and PM both +ve.

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With regard to filtering property, the lead compensator is

bandpass filter

low pass filter

band reject filter

high pass filter

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The transfer function for tachometer E(S)/θ(S) is

KS

K

KS2

K/S

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Find the type of the system given by

2.

4.

3.

1.

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Lead network is used to

both A and C.

increase bandwidth.

improve steady state response.

improve transient response.

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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

4

2

12

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A box which tells the effect of inputs on control sub system is known as

Logical box.

State box.

Data Box.

Decision box.

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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 < 390.

0 < k < 3900.

0 < k < 39.

None of these

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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

0.693.

1.386.

0.500.

2.000.

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