MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
An oscillator requires an input voltage of high amplitude. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
What is the average value of saturation factor in a practical circuit? |
| A. | 1 |
| B. | 0 |
| C. | 2 |
| D. | 3 |
| Answer» B. 0 | |
| 3. |
Barkhausen criteria states phase of loop gain must be 0 for a self sustaining oscillator. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which of the following expression depicts Barkhausen criteria? |
| A. | Aβ = 1 |
| B. | Aβ = 0 |
| C. | Aβ < 1 < Aβ |
| D. | Aβ < 1 |
| Answer» B. Aβ = 0 | |
| 5. |
For practical oscillators, which law has to be obeyed? |
| A. | Faraday law |
| B. | Hertz law |
| C. | Fleming law |
| D. | Barkhausen law |
| Answer» E. | |
| 6. |
For an oscillator, input voltage is 5V, loop gain is 2, find output voltage? |
| A. | 10 |
| B. | 20 |
| C. | 5 |
| D. | 15 |
| Answer» B. 20 | |
| 7. |
What is the value of input voltage, if Aβ=1 and input voltage is 5V? |
| A. | 0 |
| B. | 2 |
| C. | 5 |
| D. | 10 |
| Answer» D. 10 | |
| 8. |
What is the value of self-oscillating circuits? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 9. |
Give the relation between output and input voltage of an oscillator? |
| A. | Av = Vi/Vo |
| B. | Vi = Vo Av |
| C. | Vo = Av/Vi |
| D. | Av = Vo/Vi |
| Answer» E. | |
| 10. |
What are oscillators? |
| A. | Switching circuits |
| B. | Converts dc to ac |
| C. | Converts ac to dc |
| D. | Filter circuits |
| Answer» C. Converts ac to dc | |