MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 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. |
What is the conduction angle of class A amplifier? |
| A. | 90 |
| B. | 180 |
| C. | 270 |
| D. | 360 |
| Answer» E. | |
| 2. |
Which of the following technique is used to increase the efficiency of class A amplifier? |
| A. | By using FET |
| B. | By using PNP transistor |
| C. | By using matched transformers as load |
| D. | By using potentiometers as load |
| Answer» D. By using potentiometers as load | |
| 3. |
WHICH_OF_THE_FOLLOWING_TECHNIQUE_IS_USED_TO_INCREASE_THE_EFFICIENCY_OF_CLASS_A_AMPLIFIER??$ |
| A. | By using FET |
| B. | By using PNP transistor |
| C. | By using matched transformers as load |
| D. | By using potentiometers as load |
| Answer» D. By using potentiometers as load | |
| 4. |
What is the conduction angle of class A amplifier?$ |
| A. | 90 |
| B. | 180 |
| C. | 270 |
| D. | 360 |
| Answer» E. | |
| 5. |
If DC power for a Class A amplifier is 500W and AC power is 150W, what is its efficiency? |
| A. | 50% |
| B. | 75% |
| C. | 20% |
| D. | 30% |
| Answer» E. | |
| 6. |
Basic operation of Class A amplifiers____________ |
| A. | Crossover distortion |
| B. | Law of Conservation of energy |
| C. | Millers law |
| D. | Switching transistor theory |
| Answer» E. | |
| 7. |
Why there is a need for heat sinks in Class A amplifier? |
| A. | To control the external temperature |
| B. | To avoid temperature changes affecting the transistor |
| C. | To control heat dissipation |
| D. | To increase output resistance |
| Answer» D. To increase output resistance | |
| 8. |
Which of the following statement is true about class A amplifiers? |
| A. | They are weak against distortions |
| B. | They supress noise signals |
| C. | More efficient |
| D. | Delivers 100% power to load |
| Answer» B. They supress noise signals | |
| 9. |
An ideal large signal amplifier delivers 100% DC power to its load. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
What is the efficiency of Class A amplifiers? |
| A. | 30 or less |
| B. | 50 or less |
| C. | 100 |
| D. | 75 |
| Answer» B. 50 or less | |
| 11. |
What does class A amplifier do? |
| A. | Delivers KV of voltage to load |
| B. | Delivers KW of power |
| C. | Delivers Kilo Pascal pressure |
| D. | Delivers more resistance |
| Answer» C. Delivers Kilo Pascal pressure | |
| 12. |
Why do we use CE amplifier as a large signal class a amplifier? |
| A. | It has very high output impedance |
| B. | It has very high input impedance |
| C. | It has very high voltage gain |
| D. | It is very much stable |
| Answer» D. It is very much stable | |