MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
To increase the input resistance in differential amplifier, replace the transistor by |
| A. | Current mirror |
| B. | Current repeater |
| C. | Darlington pair |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 2. |
What will be the overall gain in Darlington circuit, if the individual transistor gain is 200? |
| A. | 10000 |
| B. | 40000 |
| C. | 8000 |
| D. | 1000 |
| Answer» C. 8000 | |
| 3. |
Which current source exhibits a very high output resistance? |
| A. | Simple current mirror |
| B. | Wilson current mirror |
| C. | Widlar current mirror |
| D. | All of the mentioned |
| Answer» C. Widlar current mirror | |
| 4. |
The requirements for a good current source is the one in which, (Take Output current IO and Output resistance rO ) |
| A. | I<sub>O</sub> independent upon current gain and should be low |
| B. | r<sub>O</sub> should be very high |
| C. | I<sub>O</sub> in the circuit should be low |
| D. | I<sub>O</sub> independent upon current gain and r<sub>O</sub> should be very high |
| Answer» E. | |
| 5. |
If the reference and collector current are 0.539mA and 0.49mA respectively, how many transistors are used in current repeater circuit? (Assume =150) |
| A. | 11 |
| B. | 14 |
| C. | 10 |
| D. | 8 |
| Answer» C. 10 | |
| 6. |
A current repeater having identical transistor has collector current, IC1 =0.39mA. Find IC2,IC4& IC6 |
| A. | 0.39mA, 0.39mA, 0.78mA |
| B. | 0.78mA, 0.39mA, 0.39mA |
| C. | 0.39mA, 0.78mA, 0.39mA |
| D. | None of the mentioned |
| Answer» E. | |
| 7. |
Determine the early voltage, if the output resistance is 2.5 2k and input current is 2mA |
| A. | 9.8v |
| B. | 5.6v |
| C. | 7.8v |
| D. | 10v |
| Answer» E. | |