MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A decrease in illumination ________ the resistance R of a photoconductive cell. |
| A. | decreases |
| B. | increases |
| C. | maintains |
| D. | None of the above |
| Answer» C. maintains | |
| 2. |
In the reverse-bias region of varactor diodes, the resistance R in parallel with the varying capacitor is ________ and the series resistance R is ________. |
| A. | very large, very small |
| B. | very large, very large |
| C. | very small, very large |
| D. | very small, very small |
| Answer» B. very large, very large | |
| 3. |
What is the limit of peak current I in tunnel diodes? |
| A. | A few microamperes to several hundred amperes |
| B. | A few microamperes to several amperes |
| C. | A few microamperes to several milliamperes |
| D. | A few microamperes to several hundred microamperes |
| Answer» B. A few microamperes to several amperes | |
| 4. |
For a 50-A unit, the PIV of the Schottky is about ________ compared to 150 V for the junction variety. |
| A. | 25 |
| B. | 50 |
| C. | 75 |
| D. | 100 |
| Answer» C. 75 | |
| 5. |
The normal range of reverse-bias voltage V for varactor diodes is limited to about ________. |
| A. | 15 V |
| B. | 20 V |
| C. | 25 V |
| D. | 40 V |
| Answer» C. 25 V | |
| 6. |
What is the ratio I / I for gallium arsenide? |
| A. | 1:1 |
| B. | 5:1 |
| C. | 10:1 |
| D. | 20:1 |
| Answer» E. | |
| 7. |
What are the typical ranges of reverse-bias current levels I for low-power and high-power Schottky diodes at room temperature? |
| A. | Picoamperes, nanoamperes |
| B. | Nanoamperes, microamperes |
| C. | Microamperes, milliamperes |
| D. | Milliamperes, amperes |
| Answer» D. Milliamperes, amperes | |