MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Linear Integrated Circuit knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
WHAT_MUST_BE_THE_VALUE_OF_EXTERNAL_COMPONENTS_USED_IN_VOLTAGE_SERIES_FEEDBACK_AMPLIFIER??$ |
| A. | Less than 1MΩ |
| B. | Less than 10MΩ |
| C. | Less than 100MΩ |
| D. | Less than 0.1MΩ |
| Answer» B. Less than 10M‚âà√≠¬¨¬© | |
| 2. |
Define the input resistance with feedback for voltage series feedback amplifier?$ |
| A. | R<sub>IF</sub> = (1-AB) |
| B. | R<sub>IF</sub> = (AB-1) |
| C. | R<sub>IF</sub> = (1+AB) |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
When the non-inverting input terminal of an op-amp is equal to that of the inverting input terminal (ideally) |
| A. | a–>∞ |
| B. | V<sub>id</sub> ‚âÖ 0 |
| C. | A<sub>F</sub> = 1+( R<sub>F</sub> / R<sub>1</sub>) |
| D. | All of the mentioned |
| Answer» E. | |
| 4. |
For the feedback circuit of voltage series feedback amplifier, find the feedback voltage for the specifications: R1=1kΩ, RF = 10kΩ and Vo= 25v?# |
| A. | 12.5v |
| B. | 22v |
| C. | 0.9v |
| D. | 2.3v |
| Answer» E. | |
| 5. |
Which factor determines the gain of the voltage series feedback amplifier? |
| A. | Open loop voltage gain |
| B. | Feedback voltage |
| C. | Ratio of two resistors |
| D. | Gain of feedback circuit |
| Answer» D. Gain of feedback circuit | |
| 6. |
Express closed loop voltage gain (AF) in terms of open loop gain (A) and feedback circuit gain (B)? |
| A. | A<sub>F</sub> = A/AB |
| B. | A<sub>F</sub> = 1+ (A/AB) |
| C. | A<sub>F</sub> = A/(1+AB) |
| D. | A<sub>F</sub> = AB/(1+A) |
| Answer» D. A<sub>F</sub> = AB/(1+A) | |
| 7. |
Why the feedback circuit is said to be negative for voltage series feedback amplifier? |
| A. | Feedback voltage is 180<sup>o</sup> out of phase with respect to input voltage |
| B. | Input voltage is 180<sup>o</sup> out of phase with respect to feedback voltage |
| C. | Feedback voltage is in same phase with respect to input voltage |
| D. | Input voltage is in same phase with respect to feedback voltage |
| Answer» B. Input voltage is 180<sup>o</sup> out of phase with respect to feedback voltage | |
| 8. |
How is the difference voltage calculated in closed loop non-inverting amplifier? |
| A. | V<sub>id</sub>= V<sub>o</sub> – V<sub>f</sub> |
| B. | V<sub>id</sub>= V<sub>in</sub> – V<sub>f</sub> |
| C. | V<sub>id</sub>= V<sub>o</sub> – V<sub>in</sub> |
| D. | V<sub>id</sub>= V<sub>f</sub> – V<sub>in</sub> |
| Answer» C. V<sub>id</sub>= V<sub>o</sub> ‚Äö√Ñ√∂‚àö√ë‚àö¬® V<sub>in</sub> | |
| 9. |
If the feedback voltage and the output voltage are given as 10v and 4v. Find the gain of the feedback circuit in voltage-series feedback amplifier? |
| A. | 2.5v |
| B. | 40v |
| C. | 3v |
| D. | 6.2v |
| Answer» B. 40v | |
| 10. |
Specify the voltage gain of non-inverting amplifier with feedback amplifier with and without feedback? |
| A. | A= V<sub>o</sub>/V<sub>id</sub>, A<sub>F</sub> = V<sub>f</sub>/V<sub>o</sub> |
| B. | A= V<sub>f</sub>/V<sub>id</sub>, A<sub>F</sub>= V<sub>o</sub>/V<sub>f</sub> |
| C. | A= V<sub>o</sub>/V<sub>id</sub>, A<sub>F</sub>= V<sub>o</sub>in |
| D. | A= V<sub>f</sub>/V<sub>id</sub>, A<sub>F</sub> = V<sub>f</sub>/V<sub>in</sub> |
| Answer» D. A= V<sub>f</sub>/V<sub>id</sub>, A<sub>F</sub> = V<sub>f</sub>/V<sub>in</sub> | |