5. The characteristic equation of a system is given as s³+25s2+10s+50=0. What is the number of the roots in the right half s-plane and the imaginary axis respectively? a) 1,1 c) 2,1 b) 0,0 d) 1,2

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter6: Power Flows
Section: Chapter Questions
Problem 6.45P
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5. The characteristic equation of a system is given as s³+25s²+10s+50=0. What is the number of the
roots in the right half s-plane and the imaginary axis respectively?
b) 0,0
d) 1,2
а) 1,1
c) 2,1
The stability of closed loop control system whose characteristic equation is
s+s*+2s³+2s²+11s+10=0.
6.
a) Stable
c) Unstable
b) Marginally stable( margin stable means has conjugate roots )
d) None of the mentioned
7.
If the system is represented by characteristic equation s° +
s² + s + 3 = 0, then the system
is
a. Stable
c. Marginally stable
b. Unstable
d. Unpredictable
8. The no. of roots of S³ + 5S² + 7S + 3 = 0, in the right half of the s-plane is
a) 2
c) 0
b) 3
d) 1
Transcribed Image Text:5. The characteristic equation of a system is given as s³+25s²+10s+50=0. What is the number of the roots in the right half s-plane and the imaginary axis respectively? b) 0,0 d) 1,2 а) 1,1 c) 2,1 The stability of closed loop control system whose characteristic equation is s+s*+2s³+2s²+11s+10=0. 6. a) Stable c) Unstable b) Marginally stable( margin stable means has conjugate roots ) d) None of the mentioned 7. If the system is represented by characteristic equation s° + s² + s + 3 = 0, then the system is a. Stable c. Marginally stable b. Unstable d. Unpredictable 8. The no. of roots of S³ + 5S² + 7S + 3 = 0, in the right half of the s-plane is a) 2 c) 0 b) 3 d) 1
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