MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 11 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. |
AT_WHAT_FREQUENCY,_THE_PHASE_SHIFT_BETWEEN_INPUT_&OUTPUT_VOLTAGE_WILL_BE_ZERO??$ |
| A. | -40Hz |
| B. | 0Hz |
| C. | -22Hz |
| D. | 20Hz |
| Answer» C. -22Hz | |
| 2. |
What happen when the frequency increases?$ |
| A. | A<sub>OL</sub>(f) continues to drop |
| B. | A increases |
| C. | f<sub>o</sub> –> 0Hz |
| D. | None of the mentioned |
| Answer» B. A increases | |
| 3. |
At_what_frequency_AOL(f)=A?$ |
| A. | 50Hz |
| B. | 10Hz |
| C. | 5Hz |
| D. | 0Hz |
| Answer» E. | |
| 4. |
What_will_be_the_absolute_value_of_phase_shift,_if_the_frequency_keeps_increasing? |
| A. | Increase towards 45<sup>o</sup> |
| B. | Decrease towards 45<sup>o</sup> |
| C. | Increase towards 90<sup>o</sup> |
| D. | Decrease towards 90<sup>o</sup> |
| Answer» D. Decrease towards 90<sup>o</sup> | |
| 5. |
Determine the difference between two AOL(f) at 50Hz and 500Hz frequency? (Consider the op-amp to be 741c? |
| A. | 40dB |
| B. | 30dB |
| C. | 20dB |
| D. | 10dB |
| Answer» D. 10dB | |
| 6. |
Express the open loop gain of the op-amp in complex form? |
| A. | A/‚àö [1+(f/f<sub>o</sub>)<sup>2</sup> |
| B. | 20log{A/‚àö[1+(f/f<sub>o</sub>)<sup>2</sup>} |
| C. | A/[1+j(f/f<sub>o</sub>)]. |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 7. |
Consider an op-amp where the inverting input voltage =3.7mv, non-inverting input voltage=6.25mv and open loop voltage gain =142dB. Find the output voltage. |
| A. | 0.21v |
| B. | 0.45v |
| C. | 0.78v |
| D. | 0.36v |
| Answer» E. | |
| 8. |
Find the gain magnitude and phase angle of the op-amp using the specifications: |
| A. | |
| B. | A<sub>OL</sub>(f)= 22.92dB , Φ(f) = – 89.99<sup>o</sup> |
| C. | A<sub>OL</sub>(f)= 66dB , Φ(f) = – 90<sup>o</sup> |
| Answer» B. A<sub>OL</sub>(f)= 22.92dB , ‚âà√≠¬¨‚àÇ(f) = ‚Äö√Ñ√∂‚àö√ë‚àö¬® 89.99<sup>o</sup> | |
| 9. |
Which among the following factor remain fixed for an op-amp? |
| A. | Open loop voltage gain |
| B. | Gain of the op-amp |
| C. | Operating frequency |
| D. | Break frequency of the op-amp |
| Answer» E. | |
| 10. |
The open loop voltage gain as a function of frequency is defined as |
| A. | A<sub>OL</sub>(f) = V<sub>O</sub>/V<sub>in</sub> |
| B. | A<sub>OL</sub>(f) = V<sub>O</sub>/V<sub>id</sub> |
| C. | A<sub>OL</sub>(f) = V<sub>O</sub>/V<sub>f</sub> |
| D. | All of the mentioned |
| Answer» C. A<sub>OL</sub>(f) = V<sub>O</sub>/V<sub>f</sub> | |
| 11. |
Compute the break frequency of an op-amp, if the output resistance=10kΩ and capacitor connected to the output =0.1µF.$ |
| A. | 159.2Hz |
| B. | 6.28Hz |
| C. | 318.4Hz |
| D. | 1000Hz |
| Answer» B. 6.28Hz | |