MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Thickness of layers in the mpSi and pSi structures can be controlled by_____ |
| A. | current density |
| B. | etching agent |
| C. | etching time |
| D. | porosity |
| Answer» D. porosity | |
| 2. |
The effective refractive index of pSi can be varied with the current density. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
pSi and mpSi structures are widely used to produce optical structure. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The porosity of mpSi and pSi relies mainly on the ______________ |
| A. | thickness of the material |
| B. | current density |
| C. | etching agent |
| D. | temperature |
| Answer» C. etching agent | |
| 5. |
The refractive index of mpSi and pSi structures has some anisotropy. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The effective medium concept, where the optical properties of the material are established by its ________________ |
| A. | pore distribution in the structure |
| B. | band gap |
| C. | pore thickness |
| D. | wavelength of the incident light |
| Answer» C. pore thickness | |
| 7. |
In pSi structures, depletion of holes is affected by the energy barrier generated in the wall region. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
In the quantum confinement model for pSi structures, energy band gap in the wall region varies. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
pSi structures have _____________ |
| A. | high porosity |
| B. | longer life |
| C. | organised pores |
| D. | low density |
| Answer» B. longer life | |
| 10. |
Pore formation in pSi is independent of quantum confinement. |
| A. | True |
| B. | False |
| Answer» C. | |