Control Systems MCQs
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Control Systems MCQs
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25 Questions

1. Which among the following is/are an/the illustration/s of a sinusoidal input?
2. On which factor does the steady state error of the system depend?
3. If a signal is passed through an integrator, it _____the amplitude of noise signal.
4. If the system is specified by open loop transfer function G(s)H(s) = k / s(s+3) (s + 2), how many root loci proceed to end at infinity?
5. In addition to storage instructions, PLC controls __________
6. What is the value of steady state error in closed loop control systems?
7. Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output?
8. For the elimination of feedback loops, the derivation based on transfer function of ______ loop is used.
9. If the system is represented by characteristic equation s6 + s4 + s3 + s2 + s + 3 = 0, then the system is_________ 
10. If a linear system is subjected to an input r(t) = Asin(ωt), what output will be generated?
11. How is the sinusoidal transfer function obtained from the system transfer function in frequency domain?
12. Which unit is adopted for magnitude measurement in Bode plots?
13. For drawing root locus, the angle of asymptote yields the direction along which _________branches approach to infinity.
14. The frequency at which the phase of the system acquires ____ is known as ‘Phase crossover frequency’.
15. In a second order system, if the damping ratio is greater than equal to ‘1’, then what would be the nature of roots?
16. While specifying the angle and magnitude conditions, angles are added whereas magnitudes get ________ 
17. Which point on root locus specifies the meeting or collision of two poles?
18. Which notation represents the feedback path in closed loop system representation?
19. In a signal flow graph, nodes are represented by small _____
20. In signal flow graph, the product of all ______gains while going through a forward path is known as ‘Path gain’.
21. In accordance to relative stability, the settling time exhibits inversely proportional nature to ________parts of roots
22. Associative law for summing point is applicable only to those summing points which are __________connected to each other.
23. Which among the following represents an illustration of closed loop system?
24. In time domain system, which response has its existence even after an extinction of transient response?
25. In P-I controller, what does an integral of a function compute?

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