MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 16 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. |
In iteration method for modelling a diode the answer obtained by each subsequent iteration is |
| A. | Is close to the true value |
| B. | Is close to the value obtained by exponential method |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2. |
The other name for bias point is |
| A. | Quiescent point |
| B. | Node point |
| C. | Terminal point |
| D. | Static point |
| Answer» B. Node point | |
| 3. |
For small-signal operation around the dc bias point, the diode is modeled by a resistance equal to the |
| A. | Slope of the i-v characteristics of the diode at the bias point |
| B. | Square root of the slope of the i-v characteristics of the diode at the bias point |
| C. | Inverse of the slope of the i-v characteristics of the diode at the bias point |
| D. | Square root of the inverse of the slope of the i-v characteristics of the diode at the bias point |
| Answer» E. | |
| 4. |
The value of the diode small-signal resistance rd at bias currents of 0.1 mA is |
| A. | 250 Ω |
| B. | 25 Ω |
| C. | 2.5 Ω |
| D. | 0.25 Ω |
| Answer» B. 25 Ω | |
| 5. |
Calculate the change in the voltage when RL is connected as shown |
| A. | -10 mA |
| B. | -15 mA |
| C. | -20 mA |
| D. | -25 mA |
| Answer» D. -25 mA | |
| 6. |
A voltage regulator needs to provide a constant voltage in spite of the fact that there may bea) Change in the load current drawn from the terminals of the regulatorb) Change of the DC power supply that feeds the regulator circuitc) None of the mentionedd) All of the mentioned (Q.3-Q.4) For the circuit shown below calculate3. Calculate the %age change in the regulated voltage caused by a change of ±10% in the input voltage. (RL is not connected to the circuit) |
| A. | Change in the load current drawn from the terminals of the regulatorb) Change of the DC power supply that feeds the regulator circuitc) None of the mentionedd) All of the mentioned (Q.3-Q.4) For the circuit shown below calculate3. Calculate the %age change in the regulated voltage caused by a change of ±10% in the input voltage. (RL is not connected to the circuit)a) ± 0.5% |
| B. | Change of the DC power supply that feeds the regulator circuitc) None of the mentionedd) All of the mentioned (Q.3-Q.4) For the circuit shown below calculate3. Calculate the %age change in the regulated voltage caused by a change of ±10% in the input voltage. (RL is not connected to the circuit)a) ± 0.5%b) ± 1% |
| C. | None of the mentionedd) All of the mentioned (Q.3-Q.4) For the circuit shown below calculate3. Calculate the %age change in the regulated voltage caused by a change of ±10% in the input voltage. (RL is not connected to the circuit)a) ± 0.5%b) ± 1%c) ± 5% |
| D. | All of the mentioned (Q.3-Q.4) For the circuit shown below calculate3. Calculate the %age change in the regulated voltage caused by a change of ±10% in the input voltage. (RL is not connected to the circuit)a) ± 0.5%b) ± 1%c) ± 5%d) ± 10%View Answer |
| Answer» E. | |
| 7. |
Which of the following is method to model a diode’s forward characteristics? |
| A. | Iteration method |
| B. | Graphical method |
| C. | Constant-voltage drop model |
| D. | All of the mentioned |
| Answer» E. | |
| 8. |
IN_ITERATION_METHOD_FOR_MODELLING_A_DIODE_THE_ANSWER_OBTAINED_BY_EACH_SUBSEQUENT_ITERATION_IS?$ |
| A. | Is close to the true value |
| B. | Is close to the value obtained by exponential method |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
THE_OTHER_NAME_FOR_BIAS_POINT_IS?$ |
| A. | Quiescent point |
| B. | Node point |
| C. | Terminal point |
| D. | Static point |
| Answer» B. Node point | |
| 10. |
For small-signal operation around the dc bias point, the diode is modeled by a resistance equal to th? |
| A. | Slope of the i-v characteristics of the diode at the bias point |
| B. | Square root of the slope of the i-v characteristics of the diode at the bias point |
| C. | Inverse of the slope of the i-v characteristics of the diode at the bias point |
| D. | Square root of the inverse of the slope of the i-v characteristics of the diode at the bias point |
| Answer» E. | |
| 11. |
The graphical method of modeling a diode characteristics is based on |
| A. | Iteration method |
| B. | Constant voltage drop method |
| C. | Small signal approximation |
| D. | Exponential method |
| Answer» E. | |
| 12. |
In many applications, a conducting diode is modeled as having a constant voltage drop, usually approximately |
| A. | 1 V |
| B. | 0.1 V |
| C. | 0.7 V |
| D. | 7V |
| Answer» D. 7V | |
| 13. |
The value of the diode small-signal resistance rd at bias currents of 0.1 mA is |
| A. | 250 Ω |
| B. | 25 Ω |
| C. | 2.5 Ω |
| D. | 0.25 Ω |
| Answer» B. 25 ‚âà√≠¬¨¬© | |
| 14. |
Calculate the change in the voltage when RL is connected as shown |
| A. | -10 mA |
| B. | -15 mA |
| C. | -20 mA |
| D. | -25 mA |
| Answer» D. -25 mA | |
| 15. |
A voltage regulator needs to provide a constant voltage in spite of the fact that there may be |
| A. | Change in the load current drawn from the terminals of the regulator |
| B. | Change of the DC power supply that feeds the regulator circuit |
| C. | None of the mentioned |
| D. | All of the mentioned |
| Answer» E. | |
| 16. |
Which of the following is method to model a diode’s forward characteristics? |
| A. | Iteration method |
| B. | Graphical method |
| C. | Constant-voltage drop model |
| D. | All of the mentioned |
| Answer» E. | |