In a bode magnitude plot, which one of the following slopes would be exhibited at high frequencies by a 4th order all-pole system?
A. -80dB/decade
B. -40 dB/decade
C. 40 dB/decade
D. 80 dB/decade
Answer:A
In a bode magnitude plot, which one of the following slopes would be exhibited at high frequencies by a 4th order all-pole system?
A. -80dB/decade B. -40 dB/decade C. 40 dB/decade D. 80 dB/decade
Explanation: A 4th order all pole system means that the system must be having no zero or s-term in numerator and s4 terms in denominator. One pole exhibits -20dB/decade slope, so 4 pole exhibits a slope of -80 dB /decade.