Electrical Engineering MCQ Question Papers: Campus Placement

Subject: Control System 5

**Part 5: List for questions and answers of Control System I**

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**Q1.Transient state analysis deals with ————-**

**a) Magnitude of error**

**b) Nature of response**

**c) Both 1 and 2**

**d) None of the above**

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**Q2.When compared a 1st order LPF with a 2nd order LPF has**

**a) Lower voltage gain**

**b) Higher voltage gain**

**c) Higher cut off frequency**

**d) Faster drop in filter response**

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**Q3.When compared a 1st order LPF with a 2nd order LPF has**

**a) Lower voltage gain**

**b) Higher voltage gain**

**c) Higher cut off frequency**

**d) Faster drop in filter response**

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**Q4.The type of a control system is obtained from ————– transfer function?**

**a) Open loop**

**b) Closed loop**

**c) Either 1 or 2**

**d) Nether 1 nor 2**

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**Q5.Which of the following statement is/are true statements?**

**a) Type of the system is obtained from open loop transfer function**

**b) The steady state analysis depends on type of the system**

**c) Transient state analysis depends on order of the system**

**d) All of the above**

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**Q6.What is the order of closed loop system for the plant transfer function G(s) = k/s^2 ****(1+Ts) and with unity feedback**

**a) 3**

**b) 2**

**c) 1**

**d) 0 **

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**Q7.The steady state error due to ramp input for a type two system is equal to**

**a) Zero**

**b) Infinite**

**c) Non zero number**

**d) Constant**

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**Q8.Differentiation of parabolic response is a ————– response?**

**a) Parabolic**

**b) Ramp**

**c) Step**

**d) Impulse**

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**Q9.Weighting function is in terms of —————–**

**a) Laplace transforms of step response**

**b) Laplace transforms of ramp response**

**c) Laplace transforms of parabolic response**

**d) Laplace transforms of impulse response**

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**Q10.What is the open loop DC gain of a unity feedback control system having closed loop ****transfer function is (s + 4)/(s^2 + 7s +13) ?**

**a) 4/13**

**b) 13/4**

**c) 9/4**

**d) 4/9**

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**Q11.Lead compensator is used to improve ——————**

**a) Transient response**

**b) Steady state response**

**c) Both 1 and 2**

**d) None of the above**

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**Q12.Adding a pole to a system transfer function in terms of compensator represents a –****——- compensator ?**

**a) Lead**

**b) Lag**

**c) Lead-Lag**

**d) Lag-lead **

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**Q13.A linear time invariant system, initially at rest when subjected to a unit step input gave ****response c(t) = te^-t (t > and equal to 0). The transfer function of the system is**

**a) 1/s(s+1)^2**

**b) (s+1)^2/s**

**c) s/(s+1)**

**d) s/(s+1)^2**

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**Q14.Given the transfer function G(s) = 121/(s^2 + 13.2s + 121) of a system. Which of the ****following characteristics does it have?**

**a) Over damped**

**b) Critical damped**

**c) Under damped**

**d) Any of the above**

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**Q15.which of the following transfer functions represent under damped second order ****systems?**

**a) 1/(s^2 + s + 1)**

**b) 4/(s^2 + 2s + 4)**

**c) 2/(s^2 + 2s + 2)**

**d) All of the above**

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**Q16.The open loop transfer function of a unity feedback control system is given by G(s) = ****k/s(s+1). If gain k is increased to infinity, then damping ratio will tend to become**

**a) Infinite**

**b) 0.707**

**c) Unity**

**d) Zero**

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**Q17.Consider a network function H(s) = 2(s+3)/((s+2)(s+4)). What is the steady state ****response due to step input?**

**a) 4/3**

**b) 1/2**

**c) 1**

**d) 3/4**

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**Q18.The system function N(s) = V(s)/I(s) = (s+3)/(4s+5). The system is initially at rest. If the ****excitation i(t) is a unit step, which of the following is the initial value?**

**a) 0**

**b) 3/5**

**c) 1/4**

**d) 3/9 **

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**Q19.The open loop transfer function for unity feedback system is given by 5(1+0.1s) / ****(s(1+5s)(1+20s)) Find the steady state error for a step input of magnitude 10 is equal to**

**a) Zero**

**b) 2**

**c) Infinite**

**d) 5**

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**Q20.The open loop transfer function for unity feedback system is given by 5(1+0.1s) / ****(s(1+5s)(1+20s)) Find the steady state error for a ramp input of magnitude 10 is equal to**

**a) 0**

**b) 2**

**c) 5**

**d) Infinite **

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**Part 5: List for questions and answers of Control System I**

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**Q1. Answer: b**

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**Q2. Answer: c**

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**Q3. Answer: c**

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**Q4. Answer: a**

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**Q5. Answer: d**

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**Q6. Answer: a**

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**Q7. Answer: a**

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**Q8. Answer: b**

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**Q9. Answer: d**

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**Q10. Answer: d**

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**Q11. Answer: a**

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**Q12. Answer: b**

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**Q13. Answer: d**

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**Q14. Answer: c**

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**Q15. Answer: d**

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**Q16. Answer: c**

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**Q17. Answer: d**

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**Q18. Answer: c**

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**Q19. Answer: a**

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**Q20. Answer: b**