ELECTRIC CIRCUITS QUIZ

Electrical analogous element for damper element (force-voltage analogy) in mechanical translation system is

any of the above

inductor

resistor

capacitor

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The unit impulse response of second order system is 1/6 * e-0.8t sin(0.6t). THen the natural frequency is

0.6 rad/s

0.8 rad/s

2 rad/s

1 rad/s

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

4

2

6

8

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A controller transfer function is given by . What is its nature and parameter?

lead compensator, α = 0.1

lag compensator, β = 2

lag compensator, β = 10

lead compensator, α = 0.2

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A proportional plus integral controller

increases the stability of the system

has high sensitivity

it increases rise time

both 2 and 3

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

Both 2 and 3.

RL network.

RC network.

LC network.

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In frequency response analysis of second order system, the error at corner frequency is

-20 log2ξ

20 log2ξ

-10 logξ

10 logξ

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Find the order of a system given by

2.

5.

4.

3.

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A unity feedback control system has an open loop transfer function G(s) = k/(s(s² + 7s + 12) The gain k for which s = -1 + j1 will lie on the root locus of the system is

10

6.5

4

5

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A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

0

1

2

3

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