ENGINEERING CAREER AND STUDY MATERIALS

1. The transfer function technique is considered as inadequate under which of the following conditions ? (a) Systems having complexities and non-linearities (b) Systems having stability problems (c) Systems having multiple input dis¬turbances (d) All of the above Answer:(d) All of the above 2. In order to increase the damping of a badly underdamped system which of followincompensators may be used ? (a) Phase-lag (b) Phase-lead (c) Both (a) and (b) (d) Either (a) and (b) Answer: (b) Phase-lead 3. Which of the following is the best method for determining the stability and transient response ? (a) Nyquist plot (b) Bode plot (c) Root locus (d) None of the above Answer: (c) Root locus 4. The type 2 system has at the origin. (a) no net pole (b) net pole (c) simple pole (d) two poles Answer: (d) two poles 5. In a system low friction co-efficient facilitates (a) increased speed of response (b) increased velocity lag error (c) reduced velocity lag error (d) re

1. A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ? (a) Clutch (b) Eyes (c) Needle of the speedometer (d) Steering wheel (e) None of the above Ans: c 2. Which of the following is exhibited by Root locus diagrams ? (a) The poles of the transfer function for a set of parameter values (b) The bandwidth of the system (c) The response of a system to a step input (d) The frequency response of a system (e) None of the above Ans: a 3. With feed back _____ reduces. (a) system stability (6) system gain