The characteristic equation of the control system is s5+15s4+85s3+225s – McqOptions

MCQOPTIONS

1.	The characteristic equation of the control system is s5+15s4+85s3+225s2+274s+120=0 . What are the number of roots of the equation which lie to the left of the line s+1 = 0?
A.	2
B.	3
C.	4
D.	5
Answer» D. 5

Discussion

No Comment Found

Related MCQs

Unit step response of the system described by the equation y(n) +y(n-1) =x(n) is:
The Fourier Transform of a rectangular pulse is
The following characteristic equation results in stable operation of the feedback system s3+4s2+10s+11=0
Assertion (A): The z-transform of the output of the sampler is given by the series.Reason (R): The relationship is the result of the application of z = e-sT, where T stands for the time gap between the samples.
The signal is reconstructed back with the help of
Assertion (A): An LTI discrete system represented by the difference equation. y (n+2)-5y(n+1)+6y(n) =x(n) is unstable.Reason (R): A system is unstable if the roots of the characteristic equation lie outside the unit circle.
First column elements of the Routh's tabulation are 3, 5, -3/4, ½, 2. It means that there are:
An LTI system having transfer function s2+1/s2+2s+1 and input x(t) =sin(t+1) is in steady state. The output is sampled at ws rad/s to obtain the final output {y (k)}. Which of the following is true?
Assertion (A): The discrete time system described by y[n] =2x[n] +4x[n-1] is unstableReason (R): It has an impulse response with a finite number of non-zero samples
For the successful reconstruction of signals :