CONTROL SYSTEMS QUIZ

Time response for a second order system depends on the value of τ. If τ= 0 then the system is called as

under damped system.

over damped system.

critically damped system.

undamped system.

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The characteristic equation has the following roots for over damped stable system?

-2±j4

-2,2

-2,-4

-2,-2

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When compared to a 1st order LPF, a 2nd order LPF has

faster drop in filter response.

higher cut off frequency.

higher voltage gain.

lower voltage gain.

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Which of the following is/are the advantages of a closed loop control system?

The closed loop systems are less affected by noise.

nether 1 nor 2.

The closed loop systems are accurate.

both 1 and 2.

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Which one of the following is the response y(t) of a casual LTI system described by H(s) = (s+1)/(s²+2s+2) for a given input x(t) = e-t u(t)?

e-t tant*u(t)

e-t sint*u(t)

e-t cott*u(t)

e-t cost*u(t)

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

20.

0.

infinity.

40.

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The Laplace transform of a transportation lag of 5 seconds is

e-5s.

1/(s-5).

e5s.

1/(s+5).

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Which of the following is/are the example of actuator?

Electric motor

Pneumatic motor

Hydraulic motor

All

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A system of constant voltage and constant frequency is called _________________ system.

feedback.

infinite.

zero.

None of these

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Consider a network function H(s) = 2(s+3)/{(s+2)(s+4)}. What is the steady state response due to step input?

1

1/2

3/4

4/3

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