For what values of K does the polynomial s4+8s3+24s2+32s+K=0 have root – McqOptions

MCQOPTIONS

1.	For what values of K does the polynomial s4+8s3+24s2+32s+K=0 have roots with zero real parts?
A.	10
B.	20
C.	40
D.	80
Answer» E.

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 :