MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the diffusion length for electrons when Dn=10cm2/s and τn=40s? |
| A. | a)50cm |
| B. | b)25cm |
| C. | c)20cm |
| D. | d)15cm |
| Answer» D. d)15cm | |
| 2. |
What is the diffusion length for holes when Dp=25cm2/s and τp=25s? |
| A. | a)25cm |
| B. | b)1cm |
| C. | c)0.04cm |
| D. | d)50cm |
| Answer» B. b)1cm | |
| 3. |
The current entering the volume at x is I and leaving is I+Δi , the number of coulombs per second will be equal to δI. Is it true or false? |
| A. | a)True |
| B. | b)False |
| Answer» B. b)False | |
| 4. |
Calculate the number of coulombs per second if the area is 4cm2, recombination rate of hole is 1000 cm-3/s and the differential length is 2mm. |
| A. | a)1.28*10-23 |
| B. | b)1.28*10-22 |
| C. | c)1.28*10-21 |
| D. | d)1.28*10-20 |
| Answer» C. c)1.28*10-21 | |
| 5. |
Which of the following is the Taylor’s expression? |
| A. | a) |
| B. | b) |
| C. | c) |
| D. | d) |
| Answer» B. b) | |
| 6. |
What does p/τ represent? |
| A. | a)holes |
| B. | b)time |
| C. | c)holes per second lost |
| D. | d)p per unit time |
| Answer» D. d)p per unit time | |