Control system interview questions Leave a Comment / By Sivaranjith / April 27, 2018 November 11, 2020 Welcome to your Quiz. Control Systems Multiple Choice Questions and Answers: it contains 25 questions 1. The type 0 system has ______ at the origin. no pole net pole simple pole two poles 2. The transient response of a system is mainly due to inertia forces internal forces stored energy friction 3. In a stable control system, saturation can cause which of the following? Low-level oscillations High-level oscillations Conditional stability Overdamping 4. The type 1 system has ______ at the origin. no pole net pole simple pole two poles 5. In electrical-pneumatic system analogy the current is considered analogous to velocity air flow rate pressure air flow 6. In closed loop control system, with a positive value of feedback gain, the overall gain of the system will decrease increase be unaffected any of the above 7. is not a final control element Control valve Potentiometer Electro-pneumatic converter Servomotor 8. Which of the following can be measured by the use of a tacho-generator? Acceleration Speed Speed and acceleration Displacement 9. The first order control system, which is well designed, has a small bandwidth negative time constant large negative transfer function pole none of the above 10. A controller, essentially, is a sensor clipper comparator amplifier 11. This technique is not applicable to the nonlinear system Quasi linearization Functional analysis Nyquist Criterion Phase-plane representation 12. Spring constant in force-voltage analogy is analogous to capacitance reciprocal of capacitance current resistance 13. In liquid level and electrical system analogy, voltage is considered analogous to head liquid flow liquid flow rate None of the above 14. In an open loop control system Output is independent of control input Output is dependent on control input Only system parameters have effect on the control output None of the above 15. In thermal-electrical analogy charge is considered analogous to heat flow reciprocal of heat flow reciprocal of temperature temperature 16. The type 2 system has at the origin. no net pole net pole simple pole two poles 17. A control system in which the control action is somehow dependent on the output is known as Semiclosed loop system Open system Closed loop system None of the above 18. Regenerative feedback implies feedback with oscillations step input negative sign positive sign 19. Which of the following statements is correct for a system with a gain margin close to unity or a phase margin close to zero? The system is relatively stable The system is highly stable The system is highly oscillatory None of the above 20. Which of the following is the output of a thermocouple? Alternating current Direct current A.C. voltage D.C. voltage 21. The capacitance, in force-current analogy, is analogous to momentum displacement velocity mass 22. Which of the following is an open loop control system? Ward leonard control Field controlled D.C. motor Metadyne Stroboscope 23. With feedback _____ increases system stability sensitivity gain effects of disturbing signals 24. In an automatic control system which of the following elements is not used? Error detector Final control element Sensor Oscillator 25. Which of the following statements is correct for any closed loop system? All the co-efficients can have zero value All the co-efficients are always non-zero Only one of the static error co-efficients has a finite non-zero value None of the above For more Knowledge please visit: Automationforum.in Automationforum.co Time's up
