CONTROL SYSTEMS QUIZ

First Foster form of a LC network represents which element in the beginning?

Capacitor.

Resistor.

Inductor.

Both A and B.

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

2 rad/s

1/4 rad/s

1/2 rad/s

4 rad/s

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The compensator would provide a maximum phase shift of

60o.

30o.

45o.

20o.

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In the integral control of the single area system frequency error is reduced to zero. Then

integrator o/p decreases and speed changer position comes down.

integrator output and speed changer position attain a constant value.

integrator o/p decreases but speed changer position moves up.

integrator o/p increases but speed changer position comes down.

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The Laplace transformation of f(t) is F(S) given the final value of f(t) is

None of them.

One.

Zero.

Infinite.

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

Open loop control system

Both 1 and 2

Closed loop control system

None of these

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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

2.

5.

zero.

infinite.

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A first order control system is initially at 0 V and subjected to a sudden input at t=0. Its output reaches 1.1 V in 4 sec and eventually reaches steady state of 2 V. Find the time constant?

4 sec

6 sec

5 sec

2 sec

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

Electric motor

Hydraulic motor

Pneumatic motor

All

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When the polynomial is Routh Hurwitz,

the roots of function have real parts which are to be zero/negative.

none of these.

the function is not real.

all zeroes lie in the right half of the s-plane.

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