MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 6 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. |
In CB configuration, the value of =0.98A. A voltage drop of 4.9V is obtained across the resistor of 5K when connected in collector circuit. Find the base current. |
| A. | 0.01mA |
| B. | 0.07mA |
| C. | 0.02mA |
| D. | 0.05mA |
| Answer» D. 0.05mA | |
| 2. |
In an NPN silicon transistor, =0.995, IE=10mA and leakage current ICBO=0.5 A. Determine ICEO. |
| A. | 10 A |
| B. | 100 A |
| C. | 90 A |
| D. | 500 A |
| Answer» C. 90 A | |
| 3. |
A transistor has hie =1K and hfe=60 with an bypassed emitter resistor Re=1k . What will be the input resistance and output resistance? |
| A. | 90k and 50k respectively |
| B. | 33k and 45k respectively |
| C. | 6k and 40k respectively |
| D. | 63k and 40k respectively |
| Answer» E. | |
| 4. |
A transistor has hie =2k , hoe=25 mhos and hfe=60 with an unbypassed emitter resistor Re=1k . What will be the input resistance and output resistance? |
| A. | 90k and 50k respectively |
| B. | 33k and 45k respectively |
| C. | 6k and 40k respectively |
| D. | 63k and 40k respectively |
| Answer» E. | |
| 5. |
A CE amplifier when bypassed with a capacitor at the emitter resistance has |
| A. | increased input resistance and increased voltage gain |
| B. | increased input resistance and decreased voltage gain |
| C. | decreased input resistance and increased voltage gain |
| D. | decreased input resistance and decreased voltage gain |
| Answer» D. decreased input resistance and decreased voltage gain | |
| 6. |
A transistor has hfe=100, hie=2k , hoe=0.005mmhos, hre=0. Find the output impedance if the lad resistance is 5k . |
| A. | 5k |
| B. | 4k |
| C. | 20k |
| D. | 15k |
| Answer» C. 20k | |