Following are some of the multiple choice questions on the **Control System** with answers that will help the students in developing their knowledge.

## Control System MCQ

### 1. The frequency and time domain are related through which of the following?

### 2. Zero initial condition for a system means

### 3. Which notation represents the feedback path in closed loop system representation

### 4. A phase lag lead network introduces in the output

### 5. The initial response when tne output is not equal to input is called

### 6. When the initial conditions of a system are specified to be zero it implies that thesystem is

### 7. Hydraulic torque transmission system is analog of

### 8. Mass, in force-voltage analogy, is analogous to

### 9. An increase in gain, in most systems, leads to

### 10. Routh Hurwitz criterion is better than root locus.

### 11. When the number of poles is equal to the number of zeroes, how many branches of root locus tends towards infinity?

### 12. When human being tries to approach an object, his brain acts as,

### 13. The effect of error damping is to

### 14. A differentiator is usually not a part of a control system because it

### 15. Which among the following plays a crucial role in determining the state of dynamic system?

### 16. Which among the following are the interconnected units of state diagram representation?

### 17. Which of the following are the not characteristics of the closed loop systems?

### 18. Which mechanism in control engineering implies an ability to measure the state by taking measurements at output?

### 19. Which one of the following is not the property of root loci?

### 20. If root loci plots of a particular control system do not intersect the imaginary axis at any point, then the gain margin of the system will be:

### 21. The addition of open loop zero pulls the root loci towards:

### 22. What is the number of the root locus segments which do not terminate on zeroes?

### 23. Which one of the following are correct? The root locus is the path of the roots of the characteristic equation traced out in the s- plane?

### 24. The breakaway point calculated mathematically must always lie on the root locus.

### 25. A system is said to be____________if it is possible to transfer the system state from any initial state to any desired state in finite interval of time.

### 26. With feedback___________reduces.

### 27. _____________directly converts temperature into voltage.

### 28. In a control system integral error compensation_____________steady state error

### 29. A system is said to be______________if it is possible to transfer the system state from any initial state to any desired state in finite interval of time.

### 30. According to the property of state transition method, e0 is equal to____________

### 31. State model representation is possible using____________

### 32. State space analysis is applicable even if the initial conditions are_______

### 33. Conventional control theory is applicable to____________systems

### 34. An amplidyne can give which of the following characteristics ?

### 35. Technique is not applicable to nonlinear system ?

### 36. Insertion of negative feedback in control system affects:

### 37. Which of the following will not decrease as a result of introduction of negative feedback?

### 38. Which among the following constitute the state model of a system in addition to state equations?

### 39. Stability of a system implies that :

### 40. Real distinct and negative.

### 41. Real and equal but with opposite sign.

### 44. Consider a system if represented by state space equation and x1 (t) =x2 (t), then the system is:

### 46. Kalman’s test is for :

### 47. Kalman’s test is for :

### 48. System transformation on function H(z) for a discrete time LTI system expressed in state variable form with zero initial condition

### 49. A transfer function of the system does not have pole-zero cancellation? Which of the following statements is true?

### 50. Complex conjugate pair:

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