MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The coupling device is essential for a difference amplifier. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
What is the total voltage gain of a difference amplifier if the gain of first stage is 10dB, gain of the second stage is 20dB and gain of third stage is 30dB? |
| A. | 60.32dB |
| B. | 50dB |
| C. | 60dB |
| D. | 50.32dB |
| Answer» D. 50.32dB | |
| 3. |
How many methods of coupling are used for a difference amplifier? |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | 5 |
| Answer» C. 2 | |
| 4. |
What is the purpose of using a difference amplifier? |
| A. | Increase voltage gain |
| B. | Decrease voltage gain |
| C. | Increase current gain |
| D. | Decrease current gain |
| Answer» B. Decrease voltage gain | |
| 5. |
How do we calculate the output voltage of a difference amplifier? |
| A. | V<sub>O</sub> = -A<sub>d</sub> V<sub>d</sub> + A<sub>C</sub> V<sub>C</sub> |
| B. | V<sub>O</sub> = -A<sub>d</sub> V<sub>d</sub> A<sub>C</sub> V<sub>C</sub> |
| C. | V<sub>O</sub> = A<sub>d</sub> V<sub>d</sub> + A<sub>C</sub> V<sub>C</sub> |
| D. | V<sub>O</sub> = A<sub>d</sub> V<sub>d</sub> A<sub>C</sub> V<sub>C</sub> |
| Answer» D. V<sub>O</sub> = A<sub>d</sub> V<sub>d</sub> A<sub>C</sub> V<sub>C</sub> | |
| 6. |
How is the voltage gain measured in a difference amplifier? |
| A. | Volts |
| B. | Ampere |
| C. | Decibels |
| D. | Dimensionless |
| Answer» D. Dimensionless | |
| 7. |
What is the total voltage gain of a difference amplifier if input of first stage is 50V and the output of the second stage is 100V? |
| A. | 20 |
| B. | 0.2 |
| C. | 2.5 |
| D. | 2 |
| Answer» E. | |
| 8. |
What is the total voltage gain of a difference amplifier if the gain of first stage is 4.8 and the gain of the second stage is 1.2? |
| A. | 6.75 |
| B. | 6.55 |
| C. | 5.76 |
| D. | 5.65 |
| Answer» D. 5.65 | |
| 9. |
What is the problem with a single operational difference amplifier? |
| A. | High input resistance |
| B. | Low input resistance |
| C. | Low output resistance |
| D. | High output resistance |
| Answer» C. Low output resistance | |
| 10. |
What is the voltage gain of a differential amplifier is all amplifier values are equal? |
| A. | 1 |
| B. | 0 |
| C. | |
| D. | Cannot be determined |
| Answer» B. 0 | |