MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Mechatronics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the value of current gain (α) where emitter current(Ic)=1.6 milli ampere; collector current=1.5 milli ampere and base current=0.1 milli ampere? |
| A. | 3.1 |
| B. | 0.937 |
| C. | |
| Answer» C. | |
| 2. |
A bipolar junction transistor has collector current(Ic)=1.3 milli ampere and emitter current=1.5 milli ampere. What is the base current? |
| A. | 25 micro ampere |
| B. | 0.2 micro ampere |
| C. | |
| Answer» D. | |
| 3. |
A bipolar junction transistor has beta=100 and base current= 8 micro ampere. What is the collector current? |
| A. | 25 micro ampere |
| B. | 0.8 micro ampere |
| C. | 0.8 milli ampere |
| D. | 10 milli ampere |
| Answer» D. 10 milli ampere | |
| 4. |
What are the parameters over which Input characteristics curve of bipolar junction transistor is made in common emitter configuration? |
| A. | Emitter Current and time |
| B. | Emitter to base Voltage and time |
| C. | Collector Current and frequency |
| D. | Base to Emitter Voltage and base current |
| Answer» E. | |
| 5. |
What are the parameters over which transfer characteristics curve of bipolar junction transistor is made in common emitter configuration? |
| A. | Emitter Current and time |
| B. | Emitter Voltage and time |
| C. | Collector Current and frequency |
| D. | Collector to Emitter Voltage and Collector current |
| Answer» E. | |
| 6. |
When bipolar junction transistor acts as an amplifier? |
| A. | When base emitter terminal is forward biased and base collector terminal is reverse bias |
| B. | When base emitter terminal is reverse biased and base collector terminal is reverse bias |
| C. | When base emitter terminal is reverse biased and base collector terminal is forward bias |
| D. | When base emitter terminal is forward biased and base collector terminal is forward bias |
| Answer» B. When base emitter terminal is reverse biased and base collector terminal is reverse bias | |
| 7. |
What is the minimum voltage required to make base emitter junction of a real silicon bipolar junction transistor in forward biased? |
| A. | 0.7 volts |
| B. | 1.8 volts |
| C. | 2.3 volts |
| D. | 0.3 volts |
| Answer» B. 1.8 volts | |
| 8. |
Three PN junctions is present in a bipolar junction transistor. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
In bipolar junction transistors both electron and holes are responsible for conduction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which is an example of bipolar junction transistor? |
| A. | BC547B |
| B. | CMCP793V-500 |
| C. | SLB700A/06VA |
| D. | MBR5H100MFST1G |
| Answer» B. CMCP793V-500 | |
| 11. |
Which terminal of the diode is common to the other two terminals of the diode? |
| A. | Base is common to collector and emitter |
| B. | Emitter is common to collector and base |
| C. | Collector is common to base and emitter |
| D. | No terminal is common to any other |
| Answer» B. Emitter is common to collector and base | |
| 12. |
What happens to the collector current if the emitter current increases while no base voltage is applied? |
| A. | Increases |
| B. | Decreases |
| C. | No current |
| D. | First increases then decreases |
| Answer» D. First increases then decreases | |
| 13. |
A bipolar junction transistor has beta=250 and base current=10micro ampere. What is the collector current? |
| A. | 25 micro ampere |
| B. | 10 micro ampere |
| C. | 2.5 milli ampere |
| D. | 10 milli ampere |
| Answer» D. 10 milli ampere | |