Instrumentation-FREQUENCY RESPONSE ANALYSIS Leave a Comment / By Areej / March 2, 2018 Welcome to your Quiz .This quiz is about FREQUENCY RESPONSE ANALYSIS .it contains 10 questions 1. A system has poles at 0.01 Hz, 1 Hz and 80Hz, zeroes at 5Hz, 100Hz and 200Hz. The approximate phase of the system response at 20 Hz is : -90° 90° 0 -180° 2. Scientist Nyquist have contribution in: Asymptotic plots Polar plots Root locus technique 3. Which one of the following statements is correct?                                                Nichol’s chart is useful for the detailed study of: Closed loop frequency response Open loop frequency response Close loop and open loop frequency responses 4. Constant M- loci: Constant gain and constant phase shift loci of the closed-loop system. ) Plot of loop gain with the variation in frequency Circles of constant gain for the closed loop transfer function Circles of constant phase shift for the closed loop transfer function 5. If the gain of the open loop system is doubled, the gain of the system is : Not affected Doubled Halved One fourth of the original value 6. For a stable closed loop system, the gain at phase crossover frequency should always be: < 20 dB > 0 dB > 6 dB < 6 dB 7. Scientist Bode have contribution in : Asymptotic plots Polar plots Root locus technique Constant M and n circle 8. Which one of the following methods can determine the closed loop system resonance frequency operation? Root locus method Nyquist method M and N circle 9. Constant N-loci: Constant gain and constant phase shift loci of the closed-loop system. Plot of loop gain with the variation in frequency Circles of constant gain for the closed loop transfer function Circles of constant phase shift for the closed loop transfer function 10. Nichol’s chart: Plot of loop gain with the variation in frequency Constant gain and constant phase shift loci of the closed-loop system. Circles of constant gain for the closed loop transfer function Circles of constant phase shift for the closed loop transfer function Time's up
