Question

6) The open loop transfer function of a control system is 10-011. Ata frequency of 1 Hz, the system phase shift is: (1) 0.9 kg (2) 5.7" tag (3) 18 (6) 36"lag (5) none of the above h) The open-loop transfer function of control system is 10 At high frequencies, the gain will: (1) be constant (2) roll off at -20 d/decade (3) roll off at -40 dB/decade (6) roll off at 60 dB/decade The open-loop transfer function of a control system is. (1 + 0.132 The high-frequency phase shift of the system will be (1) 0 degrees (2) - 90 degrees (3) -180 degrees (1)-270 degrees ite k) The phase margin of a control system is defined as the amount by which the phase lag is: (1) more negative than 10 when the gainis Odh. (2) less than-180when the gain is 0 dB (3) more negative than 10 at a frequency of 1 rad/s. (4) less than 10 at a frequency of 1 rad/s. (5) less than when the gain is 0 dB S 1) For a closed-loop system to be stable, the open-loop system phase margin must (1) less than 70 degrees (2) more than 30 degrees (3) more than 0 degrees (4) more than 30 degrees [5] less than - 70 degrees WAVAMISEN Pe 12 of 15