MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 65 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
______________By which of the following the system response can be tested better ? |
| A. | Ramp input signal |
| B. | Sinusoidal input signal |
| C. | Unit impulse input signal |
| D. | Exponentially decaying signal |
| Answer» D. Exponentially decaying signal | |
| 52. |
Any externally introduced signal affecting the controlled output is called a______________? |
| A. | feedback |
| B. | stimulus |
| C. | signal |
| D. | gain control |
| Answer» C. signal | |
| 53. |
An increase in gain, in most systems, leads to_____________? |
| A. | smaller damping ratio |
| B. | larger damping ratio |
| C. | constant damping ratio |
| D. | none of the above |
| Answer» B. larger damping ratio | |
| 54. |
An automatic toaster is a ___________ loop control system? |
| A. | open |
| B. | closed |
| C. | partially closed |
| D. | any of the above |
| Answer» B. closed | |
| 55. |
A.C. servomotor resembles_____________? |
| A. | two phase induction motor |
| B. | Three phase induction motor |
| C. | direct current series motor |
| D. | universal motor |
| Answer» B. Three phase induction motor | |
| 56. |
A.C. servomotor is basically a____________? |
| A. | universal motor |
| B. | single phase induction motor |
| C. | two phase induction motor |
| D. | three phase induction motor |
| Answer» D. three phase induction motor | |
| 57. |
A signal other than the reference input that tends to affect the value of controlled variable is known as_________________? |
| A. | disturbance |
| B. | command |
| C. | control element |
| D. | reference input |
| Answer» B. command | |
| 58. |
A phase lag lead network introduces in the output_______________? |
| A. | lag at all frequencies |
| B. | lag at high frequencies and lead at low frequencies |
| C. | lag at low frequencies and lead at high frequencies |
| D. | none of the above |
| Answer» D. none of the above | |
| 59. |
A good control system has all the following features except_____________? |
| A. | good stability |
| B. | slow response |
| C. | good accuracy |
| D. | sufficient power handling capacity |
| Answer» C. good accuracy | |
| 60. |
A differentiator is usually not a part of a control system because it______________? |
| A. | reduces damping |
| B. | reduces the gain margin |
| C. | increases input noise |
| D. | increases error |
| Answer» D. increases error | |
| 61. |
A controller, essentially, is a________________? |
| A. | sensor |
| B. | clipper |
| C. | comparator |
| D. | amplifier |
| Answer» D. amplifier | |
| 62. |
A control system working under unknown random actions is called______________? |
| A. | computer control system |
| B. | digital data system |
| C. | stochastic control system |
| D. | adaptive control system |
| Answer» D. adaptive control system | |
| 63. |
A control system with excessive noise, is likely to suffer from_______________? |
| A. | saturation in amplifying stages |
| B. | loss of gain |
| C. | vibrations |
| D. | oscillations |
| Answer» B. loss of gain | |
| 64. |
A control system in which the control action is somehow dependent on the output is known as____________? |
| A. | Closed loop system |
| B. | Semiclosed loop system |
| C. | Open system |
| D. | None of the above |
| Answer» B. Semiclosed loop system | |
| 65. |
A conditionally stable system exhibits poor stability at______________? |
| A. | low frequencies |
| B. | reduced values of open loop gain |
| C. | increased values of open loop gain |
| D. | none of the above |
| Answer» C. increased values of open loop gain | |