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Root Locus MCQ Questions And Answers - Control Systems

Root Locus MCQs : This section focuses on the "Root Locus" in Control Systems. These Multiple Choice Questions (MCQs) should be practiced to improve the Control Systems skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

The Root locus is the locus of the roots of the characteristic equation by varying system gain K from zero to ___________.

A. 1
B. -1
C. infinity
D. All of the above

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Question 2

In root locus , G(s)H(s) represent?

A. K(N(s)+D(s))
B. K(N(s)-D(s))
C. K(N(s)*D(s))
D. K(N(s)/D(s))

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Question 3

In root locus , if K = 0 then?

A. the closed loop poles are greater to open loop poles
B. the closed loop poles are equal to open loop poles
C. the closed loop poles are less to open loop poles
D. the closed loop poles are not equal to open loop poles

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Question 4

In root locus , if K = infiinite then?

A. the closed loop poles are greater to open loop poles
B. the closed loop poles are equal to the open loop poles
C. the closed loop poles are less to open loop poles
D. the closed loop poles are not equal to open loop poles

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Question 5

The angle condition is the point at which the angle of the open loop transfer function is an odd multiple of ?

A. 45 degree
B. 90 degree
C. 150 degree
D. 180 degree

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Question 6

In the root locus diagram, we can observe the path of the closed loop poles.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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Question 7

While increasing the value of gain K, the system becomes

A. More stable
B. Unstable
C. Less stable
D. Absolute stable

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Question 8

Root locus is used to calculate:

A. Marginal stability
B. Absolute stability
C. Conditional stability
D. Relative stability

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Question 9

Which one of the following applications software’s is used to obtain an accurate root locus for?

A. LISP
B. MATLAB
C. dBase
D. Oracle

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Question 10

Break-away and break-in points exist only on the real axis root locus branches.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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