MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Control Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Consider the following statements relating to synchro’s:1. The rotor of the control transformer is either disc shaped2. The rotor of the transmitter is so constructed as to have a low magnetic reluctance3. Transmitter and control transformer pair is used as an error detectorWhich of these statements are correct? |
| A. | 1,2 and3 |
| B. | 1 and 2 |
| C. | 2 and3 |
| D. | 1 and 3 |
| Answer» D. 1 and 3 | |
| 2. |
For two-phase AC servomotor, if the rotor’s resistance and reactance are respectively R and X, its length and diameter are respectively L and D then, |
| A. | X/R and L/D are both small |
| B. | X/R is large but L/D is small |
| C. | X/R is small but L/D is large |
| D. | X/R and L/D are both large |
| Answer» D. X/R and L/D are both large | |
| 3. |
Assertion (A): Transfer function approach has limitation that it reveals only the system output for a input and provides no information regarding the internal state of the system.Reason (R): There may be situations where the output of a system is stable and yet some of the system elements may have a tendency to exceed their specified ratings. |
| A. | Both A and R are true and R is correct explanation of A |
| B. | Both A and R are true but R is not correct explanation of A |
| C. | A is true but R is False |
| D. | A is False but R is True |
| Answer» B. Both A and R are true but R is not correct explanation of A | |
| 4. |
System transformation on function H(z) for a discrete time LTI system expressed in state variable form with zero initial conditiona) C(zI-A)-1B+Db) C(zI-A)-1c) (zI-A)-1zd) (zI- |
| A. | C(zI-A)-1B+D |
| B. | C(zI-A)-1 |
| C. | (zI-A)-1z |
| D. | (zI-A)-1 |
| Answer» B. C(zI-A)-1 | |
| 5. |
The transfer function for the state representation of the continuous time LTI system:dq(t)/dt=Aq(t)+Bx(t)Y(t)=Cq(t)+Dx(t)is given by:a) C(sI-A)-1B+Db) B(sI-A)-1B+Dc) C(sI-A)-1B+Ad) D(sI- |
| A. | C(sI-A)-1B+D |
| B. | B(sI-A)-1B+D |
| C. | C(sI-A)-1B+A |
| D. | D(sI-A)-1B+C |
| Answer» B. B(sI-A)-1B+D | |
| 6. |
AMPLIFIER:?$ |
| A. | Armature controlled FHP DC motor |
| B. | A pair of synchronous transmitter and control transformer |
| C. | Tach generator |
| D. | Amplidyne |
| Answer» E. | |
| 7. |
Servomotor? |
| A. | Armature controlled FHP DC motor |
| B. | A pair of synchronous transmitter and control transformer |
| C. | Tach generator |
| D. | Amplidyne |
| Answer» C. Tach generator | |
| 8. |
Error detector? |
| A. | Armature controlled FHP DC motor |
| B. | A pair of synchronous transmitter and control transformer |
| C. | Tach generator |
| D. | Amplidyne |
| Answer» B. A pair of synchronous transmitter and control transformer | |
| 9. |
For two-phase AC servomotor, if the rotor’s resistance and reactance are respectively R and X, its length and diameter are respectively L and D then,$ |
| A. | X/R and L/D are both small |
| B. | X/R is large but L/D is small |
| C. | X/R is small but L/D is large |
| D. | X/R and L/D are both large |
| Answer» D. X/R and L/D are both large | |
| 10. |
When human being tries to approach an object, his brain acts as, |
| A. | An error measuring device |
| B. | A controller |
| C. | An actuator |
| D. | An amplifier |
| Answer» C. An actuator | |
| 11. |
Assertion (A): Transfer function approach has limitation that it reveals only the system output for a input and provides no information regarding the internal state of the system. |
| A. | : There may be situations where the output of a system is stable and yet some of the system elements may have a tendency to exceed their specified ratings. |
| B. | Both A and R are true and R is correct explanation of A |
| C. | Both A and R are true but R is not correct explanation of A |
| D. | A is true but R is False |
| Answer» B. Both A and R are true and R is correct explanation of A | |
| 12. |
State space analysis is applicable for non-linear systems and for multiple input and output systems. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
System transformation on function H(z) for a discrete time LTI system expressed in state variable form with zero initial condition |
| A. | C(zI-A)<sup>-1</sup>B+D |
| B. | C(zI-A)<sup>-1</sup> |
| C. | (zI-A)<sup>-1</sup>z |
| D. | (zI-A)<sup>-1</sup> |
| Answer» B. C(zI-A)<sup>-1</sup> | |
| 14. |
The transfer function for the state representation of the continuous time LTI system: |
| A. | /dt=Aq(t)+Bx(t) |
| B. | =Cq(t)+Dx(t) |
| C. | |
| Answer» B. =Cq(t)+Dx(t) | |