MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
Find current I through the circuit using characteristic equation of diode. The terminal voltage of each diode is 0.6V. Reverse saturation current is 10-12A. |
| A. | 0.84mA |
| B. | 1.84mA |
| C. | 2.35mA |
| D. | 3.01mA |
| Answer» C. 2.35mA | |
| 2. |
What will be the current I in the circuit diagram below. Take terminal voltage of diode as 0.7V and I0as 10-12A. |
| A. | 2.4mA |
| B. | 0.9mA |
| C. | 1mA |
| D. | 4mA |
| Answer» B. 0.9mA | |
| 3. |
What will be the ratio of final current to initial current of a diode if the voltage of a diode changes from 0.7V to 872.5mV. Take ideality factor as 1.5. |
| A. | 90.26 |
| B. | 52.36 |
| C. | 80.23 |
| D. | 83.35 |
| Answer» E. | |
| 4. |
If current of a diode changes from 1mA to 10mA what will be the change in voltage across the diode. The ideality factor of diode is 1.2. |
| A. | 0.718V |
| B. | 7.18V |
| C. | 0.0718V |
| D. | 0.00728V |
| Answer» D. 0.00728V | |
| 5. |
Consider a silicon diode with η=1.2. Find the change in voltage if the current changes from 0.1mA to 10mA. |
| A. | 0.154V |
| B. | 0.143V |
| C. | 0.123V |
| D. | 0.165V |
| Answer» C. 0.123V | |
| 6. |
Find the temperature at which a diode current is 2mA for a diode which has reverse saturation current of 10-9 A. The ideality factor is 1.4 and the applied voltage is 0.6V forward bias. |
| A. | 69.65°C |
| B. | 52.26°C |
| C. | 25.23°C |
| D. | 70.23°C |
| Answer» B. 52.26°C | |
| 7. |
Find the applied voltage on a forward biased diode if the current is 1mA and reverse saturation current is 10-10. Temperature is 25°C and takes ideality factor as 1.5. |
| A. | 0.658V |
| B. | 0.726V |
| C. | 0.526V |
| D. | 0.618V |
| Answer» E. | |
| 8. |
Calculate the reverse saturation current of a diode if the current at 0.2V forward bias is 0.1mA at a temperature of 25°C and the ideality factor is 1.5. |
| A. | 5.5x 10-9 A |
| B. | 5.5x 10-8 A |
| C. | 5.5x 10-7 A |
| D. | 5.6x 10-10 A |
| Answer» D. 5.6x 10-10 A | |
| 9. |
Calculate the thermal voltage when the temperature is 25°C. |
| A. | 0V |
| B. | 0V |
| C. | 0.026V |
| D. | 0.25V |
| Answer» C. 0.026V | |
| 10. |
Calculate the forward bias current of a Si diode when forward bias voltage of 0.4V is applied, the reverse saturation current is 1.17×10-9A and the thermal voltage is 25.2mV. |
| A. | 9.156mA |
| B. | 8.23mA |
| C. | 1.256mA |
| D. | 5.689mA |
| Answer» B. 8.23mA | |