Posted on : April 27, 2018 By Sivaranjith Welcome to your Quiz. Control Systems Multiple Choice Questions and Answers: it contains 25 questions 1. 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 above2. Which of the following is an open loop control system? Ward leonard control Field controlled D.C. motor Metadyne Stroboscope3. In a stable control system, saturation can cause which of the following? Low-level oscillations High-level oscillations Conditional stability Overdamping4. Which of the following is the output of a thermocouple? Alternating current Direct current A.C. voltage D.C. voltage5. This technique is not applicable to the nonlinear system Quasi linearization Functional analysis Nyquist Criterion Phase-plane representation6. 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 above7. 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 above8. The capacitance, in force-current analogy, is analogous to momentum displacement velocity mass9. The type 0 system has ______ at the origin. no pole net pole simple pole two poles10. The first order control system, which is well designed, has a small bandwidth negative time constant large negative transfer function pole none of the above11. In liquid level and electrical system analogy, voltage is considered analogous to head liquid flow liquid flow rate None of the above12. In electrical-pneumatic system analogy the current is considered analogous to velocity air flow rate pressure air flow13. Spring constant in force-voltage analogy is analogous to capacitance reciprocal of capacitance current resistance14. The transient response of a system is mainly due to inertia forces internal forces stored energy friction15. 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 above16. The type 1 system has ______ at the origin. no pole net pole simple pole two poles17. In thermal-electrical analogy charge is considered analogous to heat flow reciprocal of heat flow reciprocal of temperature temperature18. 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 above19. In an automatic control system which of the following elements is not used? Error detector Final control element Sensor Oscillator20. Which of the following can be measured by the use of a tacho-generator? Acceleration Speed Speed and acceleration Displacement21. The type 2 system has at the origin. no net pole net pole simple pole two poles22. With feedback _____ increases system stability sensitivity gain effects of disturbing signals23. A controller, essentially, is a sensor clipper comparator amplifier24. is not a final control element Control valve Potentiometer Electro-pneumatic converter Servomotor25. Regenerative feedback implies feedback with oscillations step input negative sign positive signFor more Knowledge please visit: Automationforum.in Automationforum.co Related Sivaranjith News Reporter You must log in to post a comment.