MCQOPTIONS
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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. |
FOR_VD_>_±4VT,_THE_FUNCTION_OF_DIFFERENTIAL_AMPLIFIER_WILL_BE?$# |
| A. | Switch |
| B. | Limiter |
| C. | Automatic gain control |
| D. | Linear Amplifier |
| Answer» C. Automatic gain control | |
| 2. |
Change_in_value_of_common_mode_input_signal_in_differential_pair_amplifier_make$ |
| A. | Change in voltage across collector |
| B. | Slight change in collector voltage |
| C. | Collector voltage decreases to zero |
| D. | None of the mentioned |
| Answer» B. Slight change in collector voltage | |
| 3. |
A_differential_amplifier_has_a_transistor_with_β0=_100,_is_biased_at_ICQ_=_0.48mA._Determine_the_value_of_CMRR_and_ACM,_if_RE_=7.89kΩ_and_RC_=_5kΩ.$ |
| A. | 49.54 db |
| B. | 49.65 d |
| C. | 49.77 db |
| D. | 49.60 db |
| Answer» C. 49.77 db | |
| 4. |
At what condition differential amplifier function as a switc? |
| A. | 4V<sub>T</sub> < V<sub>d</sub> < -4V<sub>T</sub> |
| B. | -2V<sub>T</sub> ≤ V<sub>d</sub> ≤ 2V<sub>T</sub> |
| C. | 0 ≤ V<sub>d</sub> < -4V<sub>T</sub> |
| D. | 0 ≤ V<sub>d</sub> ≤ 2V<sub>T</sub> |
| Answer» B. -2V<sub>T</sub> ‚Äö√Ñ√∂‚àö¬¢¬¨√ü V<sub>d</sub> ‚Äö√Ñ√∂‚àö¬¢¬¨√ü 2V<sub>T</sub> | |
| 5. |
What will be the emitter current in a differential amplifier, where both the transistor are biased and matched? (Assume current to be IQ) |
| A. | I<sub>E</sub> = I<sub>Q</sub>/2 |
| B. | I<sub>E</sub> = I<sub>Q</sub> |
| C. | I<sub>E</sub> = (I<sub>Q</sub>)<sup>2</sup>/2 |
| D. | I<sub>E</sub> = (I<sub>Q</sub>)<sup>2</sup> |
| Answer» B. I<sub>E</sub> = I<sub>Q</sub> | |
| 6. |
Which of the following is not preferred for input stage of Op-amp? |
| A. | Dual Input Balanced Output |
| B. | Differential Input Single ended Output |
| C. | Cascaded DC amplifier |
| D. | Single Input Differential Output |
| Answer» D. Single Input Differential Output | |
| 7. |
What is the purpose of differential amplifier stage in internal circuit of Op-amp? |
| A. | Low gain to differential mode signal |
| B. | Cancel difference mode signal |
| C. | Low gain to common mode signal |
| D. | Cancel common mode signal |
| Answer» E. | |
| 8. |
How a symmetrical swing is obtained at the output of Op-amp |
| A. | Providing amplifier with negative supply voltage |
| B. | Providing amplifier with positive voltage |
| C. | Providing amplifier with positive& negative voltage |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
The purpose of level shifter in Op-amp internal circuit is to |
| A. | Adjust DC voltage |
| B. | Increase impedance |
| C. | Provide high gain |
| D. | Decrease input resistance |
| Answer» B. Increase impedance | |
| 10. |
Which is not the internal circuit of operational amplifier? |
| A. | Differential amplifier |
| B. | Level translator |
| C. | Output driver |
| D. | Clamper |
| Answer» E. | |