CONTROL SYSTEMS QUIZ

Time taken by the response to reach and stay within a specified error is called

Peak time.

Peak overshoot.

Raise time.

Settling time.

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Find the bandwidth of the system, when rise time of the system is give as 1msec?

750 Hz

500 Hz

1 kHz

350 Hz

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Find the Laplace transform for sinωt?

ω/(s²+ω²)

1/s

s/(s²+ω²)

1/s²

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In polar plots if the critical point '-1+j0' is enclosed then the system is --------

critical stable

unstable

marginally stable

stable

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Negative feedback in a closed loop control system

All of these

reduces sensitivity to parameter variation.

reduces gain.

improves disturbance rejection.

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Find the corner frequency for the following transfer function? G(s) = 1/(s+2)

1/4 rad/s

1/2 rad/s

4 rad/s

2 rad/s

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The open loop transfer function for unity feedback system is given by 5(1+0.1s) / (s(1+5s)(1+20s)) Find the steady state error for a step input of magnitude 10 is equal to

zero.

infinite.

5.

2.

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For the polynomial , find the number of roots which lie on the right half of s-plane?

2

1

0

4

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Type and order of transfer function G (s) = K / {s(s + 2)}

2, 1.

1, 1.

0, 2.

1, 2.

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The error of a system to a ramp input is 1/5, if the type of the system is decreased by one, then the error of unit step input is

0.167

6/5

0.2

5

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