MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The op amp in the precision rectifier circuit is ideal with output saturation levels of ±12 V. Assume that when conducting the diode exhibits a constant voltage drop of 0.7 V. Find V0 when VI is 2V. |
| A. | 0V |
| B. | 0.7V |
| C. | 1V |
| D. | 1.7V |
| Answer» B. 0.7V | |
| 2. |
The op amp in the precision rectifier circuit is ideal with output saturation levels of ±12 V. Assume that when conducting the diode exhibits a constant voltage drop of 0.7 V. Find V– when VI is -1V. |
| A. | 0V |
| B. | 0.7V |
| C. | 1V |
| D. | 1.7V |
| Answer» B. 0.7V | |
| 3. |
Consider a peak rectifier fed by a 60-Hz sinusoid having a peak value Vp = 100 V. Let the load resistance R = 10 kΩ. Calculate the fraction of the cycle during which the diode is conducting |
| A. | 1.06 % |
| B. | 2.12 % |
| C. | 3.18% |
| D. | 4.24% |
| Answer» D. 4.24% | |
| 4. |
A simple diode rectifier has ‘ripples’ in the output wave which makes it unsuitable as a DC source. To overcome this one can use |
| A. | A capacitor in series with a the load resistance |
| B. | A capacitor in parallel to the load resistance |
| C. | Both of the mentioned situations will work |
| D. | None of the mentioned situations will work |
| Answer» C. Both of the mentioned situations will work | |
| 5. |
For a half-wave rectifier having diode voltage VD and supply input of VI, the diode conducts for π – 2Θ, where Θ is given by |
| A. | tan -1 VD/VI |
| B. | tan-1 VD/VI – VI |
| C. | sin-1 VD/VI |
| D. | sin-1 VD/VI – VI |
| Answer» D. sin-1 VD/VI – VI | |
| 6. |
Which of the following isn’t a type of rectifier? |
| A. | Precision Half-wave Rectifier |
| B. | Bridge Rectifier |
| C. | Peak Rectifier |
| D. | None of the mentioned |
| Answer» E. | |