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___________ configuration is used frequently for impedance matching. |
| A. | fixed bias |
| B. | voltage- divider |
| C. | emitter follower |
| D. | collector feedback |
| Answer» D. collector feedback | |
| 2. |
In CE configuration, if the voltage drop across 6k resistor connected in the collector circuit is 6V. Find the value of IB when =50. |
| A. | 0.01mA |
| B. | 0.25mA |
| C. | 0.03mA |
| D. | 0.02mA |
| Answer» E. | |
| 3. |
When the signal is applied, the ratio of change of collector current to the ratio of change of base current is called_________ |
| A. | dc current gain |
| B. | ac current gain |
| C. | base current amplification factor |
| D. | emitter current amplification factor |
| Answer» C. base current amplification factor | |
| 4. |
In analog circuits, a coupling capacitor is used to connect two circuits such that only the AC signal from the first circuit can pass through to the next while DC is blocked. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The use of by-pass capacitor in CE amplifier is _________ |
| A. | to increase voltage gain |
| B. | to increase negative feedback |
| C. | for decreasing the frequency |
| D. | to block dc |
| Answer» B. to increase negative feedback | |
| 6. |
What is the correct phase shift in CE amplifier? |
| A. | 45 degrees |
| B. | 180 degrees |
| C. | 60 degrees |
| D. | 120 degrees |
| Answer» C. 60 degrees | |
| 7. |
Which type of biasing is used in CE amplifier? |
| A. | Fixed bias |
| B. | Collector to base bias |
| C. | Voltage divider bias |
| D. | Emitter bias |
| Answer» D. Emitter bias | |
| 8. |
CE amplifier is mostly preferred in amplifier circuits because _________ |
| A. | it provides better voltage and current gain |
| B. | of low output impedance |
| C. | of high output impedance |
| D. | it has better Q-point |
| Answer» B. of low output impedance | |
| 9. |
What is the use of coupling capacitors in CE amplifier? |
| A. | blocks dc |
| B. | pass ac |
| C. | reduce distortion |
| D. | pass ac & blocks dc |
| Answer» E. | |
| 10. |
For a common-emitter amplifier, the purpose of swamping is ________ |
| A. | to minimize gain |
| B. | to reduce the effects of r <sub>e</sub> |
| C. | to maximize gain |
| D. | no purpose |
| Answer» C. to maximize gain | |