Electronic Engineering MCQ Question Papers: ENTC, IT Interview Placement

Subject: Control Systems 6

**Part 6: List for questions and answers of Control Systems**

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**Q1. In p-i controller, what does an integral of a function compute?**

**a) Density of curve**

**b) area under the curve**

**c) Volume over the curve**

**d) Circumference of curve**

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**Q2. Which controller has the potential to eliminate/overcome the drawback of offset in ****proportional controllers?**

**a) p-i**

**b) P-d**

**c) Both a and b**

**d) None of the above**

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**Q3. Which time is responsible for introducing an error in the temperature regulation of ****applications associated with on-off controllers?**

**a) Rise time**

**b) dead time**

**c) Switching time**

**d) Decay time**

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**Q4. If an error signal e(t) of an on-off controller is found to be greater than zero, what would ****be its output?**

**a) 10%**

**b) 50%**

**c) 80%**

**d) 100%**

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**Q5. State space analysis is applicable even if the initial conditions are _____**

**a) Zero**

**b) non-zero**

**c) Equal**

**d) Not equal**

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**Q6. Conventional control theory is applicable to ______ systems**

**a) siso**

**b) Mimo**

**c) Time varying**

**d) Non-linear **

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**Q7. In polar plots, if a pole is added at the origin, what would be the value of the magnitude ****at ohm = 0?**

**a) Zero**

**b) infinity**

**c) Unity**

**d) Unpredictable**

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**Q8. In polar plots, what does each and every point represent w.r.t magnitude and angle?**

**a) Scalar**

**b) Vector**

**c) phasor**

**d) Differentiator**

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**Q9. In an octave frequency band, the ratio of f2 / f1 is equivalent to ________**

**a) 2**

**b) 4**

**c) 8**

**d) 10**

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**Q10. Which unit is adopted for magnitude measurement in bode plots?**

**a) Degree**

**b) Decimal**

**c) decibel**

**d) Deviation**

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**Q11. If a linear system is subjected to an input r(t) = asin(wt), what output will be ****generated?**

**a) ****c(t) = B sin (ω t + F)**

**b) ****c(t) = B cos (ω t + F)**

**c) ****c(t) = B tan (ω + F)**

**d) ****c(t) = B cot (ω t + F)**

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**Q12. The magnitude & phase relationship between _________input and the steady state ****output is called as frequency domain**

**a) Step**

**b) Ramp**

**c) sinusoidal**

**d) Parabolic **

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**Q13. While specifying the angle and magnitude conditions, angles are added whereas ****magnitudes get ________**

**a) Subtracted**

**b) multiplied**

**c) Divided**

**d) All of the above**

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**Q14. Which condition is used to verify the existence of a particular point on the root locus?**

**a) Amplitude**

**b) Frequency**

**c) Magnitude**

**d) angle**

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**Q15. Root locus specifies the movement of closed loop poles especially when the gain of ****system ________**

**a) Remains constant**

**b) exhibit variations**

**c) Gives zero feedback**

**d) Gives infinite poles**

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**Q16. In second order system, which among the following remains independent of gain (k)?**

**a) open loop poles**

**b) Closed loop poles**

**c) Both a and b**

**d) None of the above**

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**Q17. If a pole is located at s = -5 in left-hand plane (lhp), how will it be represented in ****laplace domain?**

**a) 1/ s + 5**

**b) 1/ s – 5**

**c) S/ s + 5**

**d) S/ s – 5**

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**Q18. Which among the following are solely responsible in determining the speed of ****response of control system?**

**a) poles**

**b) Zeros**

**c) Speed of input**

**d) All of the above **

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**Q19. If the complex conjugate poles are located at rhp, what would be the nature of ****corresponding impulse response?**

**a) Exponential**

**b) Damping oscillations**

**c) increasing amplifier**

**d) Constant amplitude oscillations**

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**Q20. On the basis of an output response, into how many parts can the s-plane be divided?**

**a) 2**

**b) 3**

**c) 4**

**d) 6 **

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**Part 6: List for questions and answers of Control Systems**

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**Q1. Answer: b**

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**Q2. Answer: a**

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**Q3. Answer: b**

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**Q4. Answer: d**

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**Q5. Answer: b**

**Q6. Answer: a**

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**Q7. Answer: b**

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**Q8. Answer: c**

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**Q9. Answer: a**

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**Q10. Answer: c**

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**Q11. Answer: a**

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**Q12. Answer: c**

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**Q13. Answer: b**

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**Q14. Answer: d**

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**Q15. Answer: b**

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**Q16. Answer: a**

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**Q17. Answer: a**

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**Q18. Answer: a**

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**Q19. Answer: c**

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**Q20. Answer: b**