MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Power Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Zener diodes allow a current to flow in the reverse direction, when the$ |
| A. | voltage reaches above a certain value |
| B. | temperature reaches above a certain value |
| C. | current always flows in the reverse direction only |
| D. | current cannot flow in the reverse direction |
| Answer» B. temperature reaches above a certain value | |
| 2. |
In a certain power electronics application, it is required that the voltage at the load terminals is to be kept within a certain range of voltages only. Among the device listed below, which would be the most ideal choice for this application? |
| A. | P-n junction diode |
| B. | Schottky diode |
| C. | Zener diode |
| D. | Fast recover diode |
| Answer» D. Fast recover diode | |
| 3. |
In a Schottky diode, the silicon layer acts as a _____________ |
| A. | anode |
| B. | cathode |
| C. | gate |
| D. | common terminal |
| Answer» C. gate | |
| 4. |
As compared to a p-n junction device of equal rating, the Schottky diode has |
| A. | lower reverse voltage rating |
| B. | lower reverse leakage current |
| C. | higher Switching time |
| D. | higher cut-in voltage |
| Answer» B. lower reverse leakage current | |
| 5. |
If the doping levels of the semiconductor is increased, then the width of the depletion layer |
| A. | increases |
| B. | decreases |
| C. | is unchanged |
| D. | keeps oscillating |
| Answer» C. is unchanged | |
| 6. |
In a Schottky diode, the aluminum metal acts as a __________ |
| A. | anode |
| B. | cathode |
| C. | gate |
| D. | common terminal |
| Answer» B. cathode | |
| 7. |
Schottky diodes are also called as |
| A. | metal diode |
| B. | hot carrier diode |
| C. | signaling diode |
| D. | easy turn on diode |
| Answer» C. signaling diode | |
| 8. |
When reverse breakdown occurs in a diode |
| A. | voltage increases & current is constant |
| B. | voltage increases & current also increases |
| C. | both are constant |
| D. | voltage is constant & current increases |
| Answer» E. | |
| 9. |
Ideally the voltage drop across a conducting diode must be |
| A. | ‚àû |
| B. | 0 |
| C. | higher than the forward biased voltage |
| D. | equal to the forward biased voltage |
| Answer» C. higher than the forward biased voltage | |