Electronic Engineering MCQ Question Papers: ENTC, IT Interview Placement

Subject: Control Systems 1

**Part 1: List for questions and answers of Control Systems**

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**Q1. The steady-state error of a feedback control system with an acceleration input becomes ****finite in a**

**a) Type 0 system**

**b) Type 1 system**

**c) Type 2 system**

**d) type 3 system**

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**Q2. For a type one system, the steady – state error due to step input is equal to**

**a) Infinite**

**b) zero**

**c) 0.25**

**d) 0.5**

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**Q3. The initial response when the output is not equal to input is called**

**a) transient response**

**b) Error response**

**c) Dynamic response**

**d) Either of the above**

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**Q4. The type 1 system has ______ at the origin**

**a) No pole**

**b) Net pole**

**c) simple pole**

**d) Two poles**

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**Q5. In case of type-1 system steady state acceleration is**

**a) Unity**

**b) infinity**

**c) Zero**

**d) 10**

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**Q6. The type of the system denotes the number of**

**a) poles at origin**

**b) Zeros at origin**

**c) Finite poles**

**d) Poles at infinity **

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**Q7. The transfer function of a system is 10/(1+s) the steady state error to unit step input ****when operated as aunity feedback system is**

**a) 0**

**b) 1-nov**

**c) 8**

**d) 10**

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**Q8. What is the steady state error for a unity feedback control system having g(s)=1/s(s+1) ****due to unit ramp input**

**a) 1**

**b) 0.5**

**c) 0.25**

**d) Squre root of 0.5**

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**Q9. The steady state error for type-2 system for unit ramp input is**

**a) 0**

**b) 8**

**c) 1/ka**

**d) 1/kv**

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**Q10. Among the systems responding without osciallation a ________ system exhibits the ****fastest response**

**a) Overdamped**

**b) Underdamped**

**c) critically damped**

**d) Undamped**

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**Q11. If unity feedback system has g(s)=9/s(s+3)**

**a) Natural frequency=9**

**b) natural frequency=3**

**c) Natural frequency=1/2**

**d) Natural frequency=1/6**

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**Q12. A control system having unit-damping factor will give**

**a) Oscillatory response**

**b) critically damped response**

**c) Undamped response**

**d) No response **

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**Q13. Error constants of a system are measure of**

**a) steady state response**

**b) Steady state as well as transient response**

**c) Relative stability**

**d) Transient state response**

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**Q14. The steady state error coeffiecient for a system are given by kp=0,kv=finite ****constant,ka=8 the system is**

**a) Type 0 system**

**b) Type 2 system**

**c) Type 3 system**

**d) type 1 system**

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**Q15. When the gain k of a system is increased the steady state error**

**a) Increases**

**b) Remains unchanged**

**c) May increase or decrease**

**d) decrease**

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**Q16. When the pole of the system is moved towards the imaginary axis,then**

**a) Settling time decreases**

**b) Settling time increases by 20% of initial value**

**c) Steady state error is reduced to zero**

**d) settling time of system increases**

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**Q17. For a feedback system with g(s)=9/s(s+3) the closed loop system have a damping ratio ****of**

**a) 0.33**

**b) 0.5**

**c) 1**

**d) 3**

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**Q18. The settling time for ±2 % tolerance is the time when system is at**

**a) Initial stage**

**b) last stage**

**c) Middle stage**

**d) None of these **

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**Q19. It is the time required for the response to reach 50% of the final value in first attempt ****is**

**a) delay time**

**b) Rise time**

**c) Peak time**

**d) Settling time**

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**Q20. The time required for the response to rise from 10% to 90% of its final value is**

**a) Delay time**

**b) rise time**

**c) Peak time**

**d) Settling time **

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**Part 1: List for questions and answers of Control Systems**

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**Q1. Answer: d**

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**Q2. Answer: b**

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**Q3. Answer: a**

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**Q4. Answer: c**

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**Q5. Answer: b**

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**Q6. Answer: a**

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**Q7. Answer: b**

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**Q8. Answer: a**

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**Q9. Answer: a**

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**Q10. Answer: c**

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**Q11. Answer: b**

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**Q12. Answer: b**

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**Q13. Answer: a**

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**Q14. Answer: d**

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**Q15. Answer: d**

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**Q16. Answer: d**

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**Q17. Answer: b**

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**Q18. Answer: b**

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**Q19. Answer: a**

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**Q20. Answer: b**