AIRPORT ENGINEERING QUIZ

Angle condition for complimentary root locus or inverse root locus is

± (2q) 180°

± (2q + 1) 180°

± (2q + 1) 360°

± (2q) 360°

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A second order control system has a transfer function 16/(s² + 4s + 16). Find the settling time for 2% tolerance?

2 sec

10 sec

5 sec

4 sec

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Find the Laplace transform for sinωt?

1/s

ω/(s²+ω²)

s/(s²+ω²)

1/s²

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

Laplace transform of the impulse response

Laplace transform of the parabolic response

Laplace transform of the step response

Laplace transform of the ramp response

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The transfer function of a system is 10/(1 + S) when operated as a unity feedback system, the steady state error to a unit step input will be

10.

1/11.

Zero.

¾.

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Which of the following is/are the characteristics of negative feedback control system?

Low sensitivity to parameter variations

Reduction in gain at the expense of better stability

Rejection of disturbance signals

All of these

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By using which of the following elements, mechanical translational systems are obtained?

mass element

dash-pot

All of these

spring element

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At which frequency does the Bode magnitude plots for the functions K/S2 have gain crossover frequency

ω = 0 rad/sec.

ω = K2 rad/sec.

ω = √K rad/sec.

ω = K rad/sec.

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

e6t.

e-3t u(t).

non of above.

(1/6)*(1-e-6t).

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The steady state error due to ramp input for a type two system is equal to

zero.

non zero number.

infinite.

constant.

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