CONTROL SYSTEMS QUIZ

Weighting function is in terms of -----------------

Laplace transform of the step response

Laplace transform of the ramp response

Laplace transform of the parabolic response

Laplace transform of the impulse response

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Error at corner frequency ωcf of first order control system is -------

±3 db

±1 db

±2 db

±4 db

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

e6t.

1/3.

(1/3) × (1-e-3t).

e-3t u(t).

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Accurate and reliable output is possible with which of the following system?

Open loop control system

None of these

Both 1 and 2

Closed loop control system

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The system function N(s) = V(s)/I(s) = (s+3)/(4s+5). The system is initially at rest. If the excitation i(t) is a unit step, which of the following is the final value?

0

1/4

1

3/5

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The transfer function of a system is G(s) = 100/((s+1)(s+100)). For unit step input to the system the approximate settling time for 2% criterion is

10 sec

4 sec

100 sec

400 sec

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Find the relation of damped natural frequency (ωd)

(ωn) √(1-4ζ²)

(ωn) √(1-2ζ²)

(ωn) √(1-ζ²)

(ωn) √(1-1/ζ²)

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Time response for a second order control system depends on value of ξ. If ξ>1 then the system is called as

critically damped system.

under damped system.

undamped system .

over damped system.

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Differentiation of parabolic response is a -------------- response?

impulse

step

ramp

parabolic

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

interference.

noise.

signal.

system.

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