MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Instrumentation Transducers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
IN_A_FEEDBACK_GAIN_EQUATION,_WHAT_DOES_THE_TERM_‚ÂÀ√≠‚ÄÖ√¢¬ß_STANDS_FOR??$# |
| A. | Feedback gain |
| B. | Forward gain |
| C. | Open loop gain |
| D. | Closed loop gain |
| Answer» B. Forward gain | |
| 2. |
In_which_of_the_following_conditions,_feedback_gain_(Af)_become_independent_of_forward_gain_(A)?$ |
| A. | Aβ<<1 |
| B. | Aβ=1 |
| C. | Aβ>>1 |
| D. | Aβ=0 |
| Answer» D. A‚âà√≠‚Äö√¢¬ß=0 | |
| 3. |
Input impedance of a system is 50 Ω, for the system to be negative feedback, which of the following can be its input impedance without feedback?# |
| A. | 50 Ω |
| B. | 60 Ω |
| C. | 40 Ω |
| D. | 100 Ω |
| Answer» D. 100 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ | |
| 4. |
For a negative feedback system, A=3 and β=2 and output impedance without feedback is 100Ω. What will be its total output impedance?$ |
| A. | 14.3 Ω |
| B. | 700 Ω |
| C. | 33.33 Ω |
| D. | 50 Ω |
| Answer» B. 700 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ | |
| 5. |
Input impedance ban be _______________ on application of negative feedback. |
| A. | Increased |
| B. | Decreased |
| C. | Halved |
| D. | Maintained constant |
| Answer» B. Decreased | |
| 6. |
Voltage gain improves on application of negative feedback. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following change have been happened to output impedance in negative feedback system? |
| A. | Increases |
| B. | Decreases |
| C. | No change |
| D. | Negative |
| Answer» C. No change | |
| 8. |
Which of the following represents complete expression for closed loop system? |
| A. | Aβ |
| B. | A/ Aβ |
| C. | A/ (1+Aβ) |
| D. | 1/ (1+Aβ) |
| Answer» D. 1/ (1+A‚âà√≠‚Äö√¢¬ß) | |
| 9. |
Error signal in positive feedback system will be ____________ input signal. |
| A. | Greater than |
| B. | Lower than |
| C. | Equal to |
| D. | Negative of |
| Answer» B. Lower than | |
| 10. |
Difference between input signal and feedback signal is known as ____________ |
| A. | Feedback factor |
| B. | Error signal |
| C. | Output signal |
| D. | Input signal |
| Answer» C. Output signal | |