Control Systems [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 19 - 21 of 81

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Question 19

Control Systems

Appeared in Year: 2013 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

The part of root locus on the real axis is not dependent upon the poles and zeros which are not on the real axis.

Reason(Ꭱ)

Poles and zeros which are not on the real axis always occur in conjugate pairs.

Choices

Choice (4)Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question 20

Appeared in Year: 2014 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

Routh Hurwitz criterion gives both absolute as well as relative stability using characteristic equation. (June)

Reason(Ꭱ)

For a system to be stable all roots of characteristic equation must lie in left half of s-plane.

Choices

Choice (4)Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question 21

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Routh՚s array for a system is given below: (September)

Routh՚s Array for a System is Given Below
135
129
15
-3
5

The system is

Choices

Choice (4)Response

a.

Conditionally stable

b.

Stable

c.

Unstable

d.

Marginally stable

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