MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these following is not a characteristic of an ideal diode? |
| A. | Perfect conductor when forward bias |
| B. | Zero voltage across it when forward bias |
| C. | Perfect insulator when reverse bias |
| D. | Zero current through it when forward bias |
| Answer» E. | |
| 2. |
What will be the diode resistance if the current in the circuit is zero? |
| A. | 0 ohms |
| B. | 0.7 ohms |
| C. | 0.3 ohms |
| D. | 1 ohms |
| Answer» B. 0.7 ohms | |
| 3. |
In piecewise linear characteristics what will be the RF value if the slope is 0.5? |
| A. | 25 m ohms |
| B. | 50 m ohms |
| C. | 2 ohms |
| D. | 10 ohms |
| Answer» D. 10 ohms | |
| 4. |
At room temperature (VT = 26) what will be the approximate value of r when n=1 and I=100mA? |
| A. | 26 ohms |
| B. | 2.6 ohms |
| C. | 260 ohms |
| D. | 2600 ohms |
| Answer» D. 2600 ohms | |
| 5. |
WHAT_WILL_BE_THE_DIODE_RESISTANCE_IF_THE_CURRENT_IN_THE_CIRCUIT_IS_ZERO??$ |
| A. | 0 ohms |
| B. | 0.7 ohms |
| C. | 0.3 ohms |
| D. | 1 ohms |
| Answer» B. 0.7 ohms | |
| 6. |
Which of these following is not a characteristic of an ideal diode?$ |
| A. | Perfect conductor when forward bias |
| B. | Zero voltage across it when forward bias |
| C. | Perfect insulator when reverse bias |
| D. | Zero current through it when forward bias |
| Answer» E. | |
| 7. |
What will be the thermal voltage of the diode if the temperature is 300K? |
| A. | 25.8 mV |
| B. | 50 mV |
| C. | 50V |
| D. | 19.627 mV |
| Answer» B. 50 mV | |
| 8. |
What will be the approximate value of thermal voltage of diode? |
| A. | 25mV at 300K |
| B. | 30mV at 180K |
| C. | 25mV at 180K |
| D. | 30mV at 300K |
| Answer» B. 30mV at 180K | |
| 9. |
A diode will behave as an open circuit if the voltage in the circuit is less than __________ |
| A. | cut off voltage |
| B. | saturation voltage |
| C. | leakage voltage |
| D. | threshold voltage |
| Answer» E. | |
| 10. |
In piecewise linear characteristics what will be the RF value if the slope is 0.5? |
| A. | 25 m ohms |
| B. | 50 m ohms |
| C. | 2 ohms |
| D. | 10 ohms |
| Answer» D. 10 ohms | |
| 11. |
In the diode volt ampere characteristics what will be the resistance if a slope is drawn between the voltages 50 to 100 and corresponding current 5 to 10? |
| A. | 5 ohms |
| B. | 10 ohms |
| C. | 50 ohms |
| D. | 100 ohms |
| Answer» C. 50 ohms | |
| 12. |
At room temperature (VT = 26) what will be the approximate value of r when n=1 and I=100mA? |
| A. | 26 ohms |
| B. | 2.6 ohms |
| C. | 260 ohms |
| D. | 2600 ohms |
| Answer» D. 2600 ohms | |
| 13. |
In the volt ampere characteristics of the diode, the slope of the line joining the operating point to the origin at any point is equal to reciprocal of the _________ |
| A. | resistance |
| B. | conductance |
| C. | voltage |
| D. | current |
| Answer» B. conductance | |
| 14. |
The static resistance R of the diode is given by __________ |
| A. | V/I |
| B. | V*I |
| C. | V+I |
| D. | V-I |
| Answer» B. V*I | |