CONTROL SYSTEMS QUIZ

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

20.

infinity.

0.

50.

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If a body has identical properties all over, it is known as

elastic.

none of them.

homogeneous.

isotropic.

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The amplitude spectrum of a Gaussian pulse is

A sine function.

Impulse function.

Uniform.

Gaussian.

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

nether 1 nor 2.

The closed loop systems are accurate.

both 1 and 2.

The closed loop systems are less affected by noise.

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The transfer function for tachometer E(S)/θ(S) is

K/S

KS

K

KS2

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Adding a pole to a system transfer function in terms of compensator represents a --------------- compensator ?

lead-lag

lag-lead

lag

lead

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The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

tan-1((1 - α)/(2√α)

cos-1((1 - α)/(1 + α)

both 1 and 3

sin-1((1 - α)/(1 + α)

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The graph of an electrical network has N nodes and B branches. The number of links, L with respect to the choice of a tree, is given by

B - N + 1.

B + N.

N - 2B - 1.

N - B + 1.

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The DC gain of a system represented by the transfer function 12 / {( s + 2 )( s + 3 )} is

2.

5.

1.

10.

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Consider a point S = -3 + j4 in the s-plane. Then for a system with the open loop transfer function ?

None of these

S is on root locus

S is not on root locus

either 1 or 2

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