MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A_DIODE_HAD_A_TRANSITION_CAPACITANCE_OF_1PF_AND_DEPLETION_WIDTH_OF_1_µM._THE_CAPACITANCE_CHANGES_TO_10_PF_WHEN_THE_DEPLETION_WIDTH_CHANGES._THE_FINAL_DEPLETION_WIDTH_IS___________?$# |
| A. | 10 µm |
| B. | 0.1 µm |
| C. | 1 µm |
| D. | 100 µm |
| Answer» C. 1 ¬¨¬®¬¨¬µm | |
| 2. |
A diode is replaced with another diode of different material. The ratio of relative permittivity of new material to old is 0.5. The initial capacitance was 20pF, then final capacitance will be _________? |
| A. | 15pF |
| B. | 20pF |
| C. | 10pF |
| D. | 2pF |
| Answer» D. 2pF | |
| 3. |
For a diode the transition capacitance was 15pF. The diode is replaced with another diode of same material with twice cross sectional area. Terminal voltage remains unchanged. The capacitance of new diode is __________ |
| A. | 15pF |
| B. | 30pF |
| C. | 60pF |
| D. | 7.5pF |
| Answer» C. 60pF | |
| 4. |
For a diode the transition capacitance was 10pF. The depletion width changed from 1µm to 10 µm. All other conditions remain unchanged. The new diode capacitance is __________$ |
| A. | 5pF |
| B. | 1.414pF |
| C. | 1pF |
| D. | 10pF |
| Answer» D. 10pF | |
| 5. |
What is the dependence of the transition capacitance on relative permittivity? |
| A. | Inversely proportional to relative permittivity |
| B. | Directly proportional to relative permittivity |
| C. | Independent of relative permittivity |
| D. | Directly proportional to relative permittivity with a degree of 2 |
| Answer» C. Independent of relative permittivity | |
| 6. |
As reverse bias voltage increases transition capacitance __________ |
| A. | Increases |
| B. | Decreases |
| C. | Doesn’t depend upon voltage |
| D. | Constant |
| Answer» C. Doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t depend upon voltage | |
| 7. |
Transition capacitance of a diode is inversely proportional to __________ |
| A. | Area of cross section |
| B. | Width of depletion region |
| C. | Relative permittivity |
| D. | Drift current |
| Answer» C. Relative permittivity | |
| 8. |
Transition capacitance of a diode is directly proportional to ____________ |
| A. | Area of cross section |
| B. | Width of depletion region |
| C. | Reverse voltage applied across the terminals |
| D. | Drift current |
| Answer» B. Width of depletion region | |
| 9. |
Which of the following is not known as transition capacitance? |
| A. | Junction capacitance |
| B. | Space-Charge capacitance |
| C. | Diffusion capacitance |
| D. | Barrier capacitance |
| Answer» D. Barrier capacitance | |