MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 8 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. |
Which of the following configuration classes has the lowest second order harmonics? |
| A. | Class A |
| B. | Class AB |
| C. | Class B |
| D. | Class C |
| Answer» B. Class AB | |
| 2. |
What is the unit of second harmonic distortion? |
| A. | Ampere |
| B. | dBc |
| C. | Volts |
| D. | Watts |
| Answer» C. Volts | |
| 3. |
What reduces the second harmonic distortion? |
| A. | Amplifiers |
| B. | Demodulators |
| C. | Modulators |
| D. | Transistor switch arrays |
| Answer» E. | |
| 4. |
What is the signal to noise ratio (SNR) of a second harmonic wave if the input signal amplitude is 20dB and the output signal amplitude is 25dB? |
| A. | 0.8 |
| B. | 0.5 |
| C. | 1.25 |
| D. | 1.5 |
| Answer» B. 0.5 | |
| 5. |
What is the total harmonic distortion if the amplitude of first harmonic distortion is 20dB and second harmonic distortion 25dB? |
| A. | 1.2 |
| B. | 1.52 |
| C. | 1.25 |
| D. | 1.5 |
| Answer» D. 1.5 | |
| 6. |
The second order harmonics is the most prominent even harmonic. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
What is the second harmonics of a wave form with fundamental frequency of 50Hz? |
| A. | 50Hz |
| B. | 150Hz |
| C. | 25Hz |
| D. | 100Hz |
| Answer» E. | |
| 8. |
What is the cause of harmonic distortion in a power amplifier? |
| A. | Exact replication of output signal |
| B. | Perfectly synced harmonics |
| C. | Non-linearity of transistors |
| D. | Linearity of transistors |
| Answer» D. Linearity of transistors | |