MCQOPTIONS
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MCQOPTIONS
This section includes 24 Mcqs, each offering curated multiple-choice questions to sharpen your Vlsi knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If standard area is 2λ x 2λ, then the standard capacitance of a gate of length 30λ and width 6λ is? |
| A. | 180oCg |
| B. | 45oCg |
| C. | 90oCg |
| D. | 4oCg |
| Answer» C. 90oCg | |
| 2. |
For λ based design, what is the standard unit of capacitance, (λ=5µm)? |
| A. | 0.01pF |
| B. | 0.0032pF |
| C. | 0.0023pF |
| D. | All of the mentioned |
| Answer» B. 0.0032pF | |
| 3. |
The typical values of sheet resistance for polysilicon semiconductor is? |
| A. | 15-30 Ω/square |
| B. | 150-300 Ω/square |
| C. | 1.5-3 KΩ/square |
| D. | 0.15-0.3 Ω/square |
| Answer» B. 150-300 Ω/square | |
| 4. |
The typical values of sheet resistance for the n-well semiconductor is ____________ |
| A. | 1-5 KΩ/square |
| B. | 10-50 KΩ/square |
| C. | 1-5 Ω/square |
| D. | 100-500 Ω/square |
| Answer» B. 10-50 KΩ/square | |
| 5. |
The resistance of the semiconductor material is 800Ω. The sheet resistance if the dimensions of the material is 0.125µm wide and 1 mm long is? |
| A. | 10 Ω/square |
| B. | 0.01 Ω/square |
| C. | 0.10 Ω/square |
| D. | 1 Ω/square |
| Answer» D. 1 Ω/square | |
| 6. |
Sheet resistance of semiconductor is directly measured using ___________ |
| A. | Ohmmeter |
| B. | Four point probe measurement |
| C. | Non-contact eddy current based testing device |
| D. | Any of the mentioned |
| Answer» C. Non-contact eddy current based testing device | |
| 7. |
Sheet resistance of a semiconductor is ___________ |
| A. | Inherent property of the material |
| B. | Function of thickness of the material |
| C. | Also called as Specific Resistance |
| D. | All of the mentioned |
| Answer» C. Also called as Specific Resistance | |
| 8. |
For semiconductors doped through diffusion or through surface peaked ion implantation we derive the sheet resistance as ___________ |
| A. | Average resistivity of semiconductor/thickness |
| B. | Resistivity/thickness |
| C. | Conductivity/thickness |
| D. | None of the mentioned |
| Answer» B. Resistivity/thickness | |
| 9. |
Compute the sheet resistance of a 0.17 µm thick Cu wire if resistivity of Cu wire is 1.7 µΩ-cm. |
| A. | 0.01 Ω/square |
| B. | 0.001 Ω/square |
| C. | 10.0 Ω/square |
| D. | 0.10 Ω/square |
| Answer» E. | |
| 10. |
In CMOS manufacturing process Sheet resistance is used instead of resistivity because _______________ |
| A. | Resistivity is same for all doped regions |
| B. | Resistivity and thickness are characteristics which cannot be controlled by the circuit designer, and it is expressed as the single sheet resistance parameter |
| C. | Sheet resistance is dimensionless quantity |
| D. | Sheet resistance is equal to resistivity |
| Answer» C. Sheet resistance is dimensionless quantity | |
| 11. |
The sheet resistance of the conducting material is? |
| A. | RS = resistivity/length |
| B. | RS = resistivity/width |
| C. | RS = resistivity/thickness |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 12. |
The resistance of uniform slab of the conducting material is? |
| A. | Linear(proportional) with length |
| B. | Inversely proportional to thickness |
| C. | Inversely proportional to width |
| D. | All of the mentioned |
| Answer» E. | |
| 13. |
THE_TYPICAL_VALUES_OF_SHEET_RESISTANCE_FOR_POLYSILICON_SEMICONDUCTOR_IS:?$ |
| A. | 15-30 Ω/square |
| B. | 150-300 Ω/square |
| C. | 1.5-3 KΩ/square |
| D. | 0.15-0.3 Ω/square |
| Answer» B. 150-300 ‚âà√≠¬¨¬©/square | |
| 14. |
If standard area is 2λ x 2λ, then the standard capacitance of a gate of length 30λ and width 6λ is:$# |
| A. | 180<sup>o</sup>Cg |
| B. | 45<sup>o</sup>Cg |
| C. | 90<sup>o</sup>Cg |
| D. | 4<sup>o</sup>Cg |
| Answer» C. 90<sup>o</sup>Cg | |
| 15. |
For λ based design, what is the standard unit of capacitance,(λ=5µm)?$# |
| A. | 0.01pF |
| B. | 0.0032pF |
| C. | 0.0023pF |
| D. | All of the mentioned |
| Answer» B. 0.0032pF | |
| 16. |
The typical values of sheet resistance for the n-well semiconductor is ? |
| A. | 1-5 KΩ/square |
| B. | 10-50 KΩ/square |
| C. | 1-5 Ω/square |
| D. | 100-500 Ω/square |
| Answer» B. 10-50 K‚âà√≠¬¨¬©/square | |
| 17. |
The resistance of the semiconductor material is 800Ω. The sheet resistance if the dimensions of the material is 0.125µm wide and 1 mm long is:$ |
| A. | 10 Ω/square |
| B. | 0.01 Ω/square |
| C. | 0.10 Ω/square |
| D. | 1 Ω/square |
| Answer» D. 1 ‚âà√≠¬¨¬©/square | |
| 18. |
Sheet resistance of semiconductor is directly measured using: |
| A. | Ohmmeter |
| B. | Four point probe measurement |
| C. | Non-contact eddy current based testing device |
| D. | Any of the mentioned |
| Answer» C. Non-contact eddy current based testing device | |
| 19. |
Sheet resistance of a semiconductor is: |
| A. | Inherent property of the material |
| B. | Function of thickness of the material |
| C. | Also called as Specific Resistance |
| D. | All of the mentioned |
| Answer» C. Also called as Specific Resistance | |
| 20. |
For semiconductors doped through diffusion or through surface peaked ion implantation we derive the sheet resistance as: |
| A. | Average resistivity of semiconductor/thickness |
| B. | Resistivity/thickness |
| C. | Conductivity/thickness |
| D. | None of the mentioned |
| Answer» B. Resistivity/thickness | |
| 21. |
Compute the sheet resistance of a 0.17 µm thick Cu wire if resistivity of Cu wire is 1.7 µΩ-cm$ |
| A. | 0.01 Ω/square |
| B. | 0.001 Ω/square |
| C. | 10.0 Ω/square |
| D. | 0.10 Ω/square |
| Answer» E. | |
| 22. |
In CMOS manufacturing process Sheet resistance is used instead of resistivity because: |
| A. | Resistivity is same for all doped regions |
| B. | Resistivity and thickness are characteristics which cannot be controlled by the circuit designer, and it is expressed as the single sheet resistance parameter |
| C. | Sheet resistance is dimensionless quantity |
| D. | Sheet resistance is equal to resistivity |
| Answer» C. Sheet resistance is dimensionless quantity | |
| 23. |
The sheet resistance of the conducting material is : |
| A. | RS = resistivity/length |
| B. | RS = resistivity/width |
| C. | RS = resistivity/thickness |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 24. |
The resistance of uniform slab of the conducting material is: |
| A. | Linear(proportional) with length |
| B. | Inversely proportional to thickness |
| C. | Inversely proportional to width |
| D. | All of the mentioned |
| Answer» E. | |