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
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))
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
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
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
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
Question 7
While increasing the value of gain K, the system becomes
A. More stable
B. Unstable
C. Less stable
D. Absolute stable
Question 8
Root locus is used to calculate:
A. Marginal stability
B. Absolute stability
C. Conditional stability
D. Relative stability
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
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