MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will the power gain of a transistor if it s value is 0.80 and the voltage gain is 95? |
| A. | 70 |
| B. | 80 |
| C. | 76 |
| D. | 75 |
| Answer» D. 75 | |
| 2. |
A transistor having = 0.90 is used in a common base amplifier. If the load resistance is 5.0 k and the dynamic resistance of the emitter junction is 50 , then calculate the voltage gain. |
| A. | 50 |
| B. | 100 |
| C. | 70 |
| D. | 90 |
| Answer» E. | |
| 3. |
DC current gain is the ratio of change in collector current to the change in base current. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The current gain of a transistor in a common emitter configuration is 50. If the emitter current is 5.5 mA, find the base current. |
| A. | 0.203 A |
| B. | 0.107 mA |
| C. | 0.107 A |
| D. | 0.203 mA |
| Answer» C. 0.107 A | |
| 5. |
Identify the relationship between base current amplification ( ) and emitter current amplification ( ). |
| A. | = ( frac { alpha }{1- alpha} ) |
| B. | = ( frac {1 alpha }{ alpha} ) |
| C. | = ( frac { alpha }{1 + alpha} ) |
| D. | = ( frac {1 + alpha }{1 alpha} ) |
| Answer» B. = ( frac {1 alpha }{ alpha} ) | |
| 6. |
On which of the following does base current not depend on? |
| A. | The thickness of the base |
| B. | The shape of the transistor |
| C. | Doping levels |
| D. | Number of charge carriers |
| Answer» E. | |
| 7. |
The base forms two p-n junctions with the emitter and the collector. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which among the following is larger compared to the other regions of a transistor? |
| A. | Emitter |
| B. | Collector |
| C. | Base |
| D. | Charger |
| Answer» C. Base | |
| 9. |
Which of the following supplies charge carriers in a transistor? |
| A. | Collector |
| B. | Base |
| C. | Emitter |
| D. | Charger |
| Answer» D. Charger | |
| 10. |
How many types of transistors are there? |
| A. | 2 |
| B. | 5 |
| C. | 1 |
| D. | 7 |
| Answer» B. 5 | |