MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Vlsi knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In BiCMOS driver, a good bipolar transistor should have ___________ |
| A. | low Rc |
| B. | high hfe |
| C. | high gm |
| D. | all of the mentioned |
| Answer» E. | |
| 2. |
Which has a larger value? |
| A. | Tin |
| B. | TL |
| C. | Rc |
| D. | None of the mentioned |
| Answer» B. TL | |
| 3. |
In BiCMOS drivers, the input voltage Vbe is _______ on base width. |
| A. | directly proportional |
| B. | inversely proportional |
| C. | logarithmically proportional |
| D. | exponentially proportional |
| Answer» D. exponentially proportional | |
| 4. |
When number of stages N is even, the total delay for CMOS can be? |
| A. | 1.5Nf |
| B. | 2.5Nf |
| C. | 3.5Nf |
| D. | 4.5Nf |
| Answer» D. 4.5Nf | |
| 5. |
When number of stages N is even, the total delay for nMOS can be? |
| A. | 1.5Nf |
| B. | 2.5Nf |
| C. | 3.5Nf |
| D. | 4.5Nf |
| Answer» C. 3.5Nf | |
| 6. |
The number of stages N can be given as ___________ |
| A. | ln(y)*ln(f) |
| B. | ln(y)/ln(f) |
| C. | ln(f)/ln(y) |
| D. | ln(f)/ln(2y) |
| Answer» C. ln(f)/ln(y) | |
| 7. |
What is the total delay of a CMOS pair? |
| A. | 5f |
| B. | 7f |
| C. | 8f |
| D. | 4f |
| Answer» C. 8f | |
| 8. |
What is the total delay of an nMOS pair? |
| A. | f |
| B. | 2f |
| C. | 5f |
| D. | 4f |
| Answer» D. 4f | |
| 9. |
Delay per stage for logic 1 to 0 transition can be given as __________ |
| A. | f |
| B. | 2f |
| C. | 3f |
| D. | 4f |
| Answer» E. | |
| 10. |
Delay per stage for logic 0 to 1 transition can be given as __________ |
| A. | f |
| B. | 2f |
| C. | 3f |
| D. | 4f |
| Answer» B. 2f | |
| 11. |
As width increases, capacitive load __________ |
| A. | increases |
| B. | decreases |
| C. | does not change |
| D. | exponentially increases |
| Answer» B. decreases | |
| 12. |
To reduce resistance value of inverters, channels must be made __________ |
| A. | wider |
| B. | narrower |
| C. | lenghthier |
| D. | shorter |
| Answer» B. narrower | |
| 13. |
For shorter delays ______ resistance should be used. |
| A. | smaller |
| B. | larger |
| C. | does not depend on resistance |
| D. | very large |
| Answer» B. larger | |