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This section includes 8 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. |
What will be the ratio of final current to initial current of a diode if 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. | |
2. |
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 | |
3. |
Consider a silicon diode with η=1.2. Find 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 | |
4. |
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¬¨¬®‚Äö√†√ªC | |
5. |
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 take ideality factor as 1.5.$ |
A. | 0.658V |
B. | 0.726V |
C. | 0.526V |
D. | 0.618V |
Answer» E. | |
6. |
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<sup>-9</sup> A |
B. | 5.5x 10<sup>-8</sup> A |
C. | 5.5x 10<sup>-7</sup> A |
D. | 5.6x 10<sup>-10</sup> A |
Answer» D. 5.6x 10<sup>-10</sup> A | |
7. |
Calculate the thermal voltage when the temperature is 25°C.$ |
A. | 0V |
B. | 0V |
C. | 0.026V |
D. | 0.25V |
Answer» C. 0.026V | |
8. |
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√ó10-9A and the thermal voltage is 25.2mV. |
A. | 9.156mA |
B. | 8.23mA |
C. | 1.256mA |
D. | 5.689mA |
Answer» B. 8.23mA | |