MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the value of rd, if two identical FETs are connected in parallel? |
| A. | Doubles |
| B. | Reduces to half |
| C. | 0 |
| D. | Infinite |
| Answer» C. 0 | |
| 2. |
What is the value of resultant gm if two non identical FETs are connected in parallel? |
| A. | (µ1 rd1 + µ2 rd2)/ (rd1+rd2) |
| B. | (µ1 rd2 + µ2 rd1)/ (rd1+rd2) |
| C. | 0 |
| D. | µ1 rd1+ µ2 rd2 |
| Answer» C. 0 | |
| 3. |
A FET is biased at ID = IDSS/4, at this point the value of trans conductance is __________________ (ID=10mA, Vp=-5V). |
| A. | 1mA/V |
| B. | 2mA/V |
| C. | 3mA/V |
| D. | 4mA/V |
| Answer» C. 3mA/V | |
| 4. |
For a p-channel FET, the current ID at Vgs = 2V and Vds = 5V and Vgs = 3V was found to be 2mA, what will be the value of ID at Vgs = 0V and Vds = 5V? |
| A. | 0A |
| B. | 2mA |
| C. | Lesser than 0A |
| D. | Greater than 2mA |
| Answer» B. 2mA | |
| 5. |
For an n-channel FET, the current v at Vgs=-2V and Vds=5V was found to be 2mA, what will be the value of ID at Vgs=0V and Vds=5V? |
| A. | 0A |
| B. | 2mA |
| C. | Lesser than 0A |
| D. | Greater than 2mA |
| Answer» E. | |
| 6. |
A JFET has ID=10mA, IDSS=1A, Vp=-1v, what is the value of Vgs? |
| A. | -0.9V |
| B. | 1V |
| C. | -1V |
| D. | 0.5V |
| Answer» B. 1V | |
| 7. |
If a JFET with length L=10µm, a=2µm, W=8µm, Vp=-4V.What is the value of rds at Vgs = 0V? |
| A. | 2KΩ |
| B. | 5.2KΩ |
| C. | 10KΩ |
| D. | 9.8KΩ |
| Answer» E. | |
| 8. |
For low value of VDS, the JFET behaves like a __________ |
| A. | Voltage Variable Resistor |
| B. | Constant Voltage Device |
| C. | Amplifier |
| D. | Switch |
| Answer» B. Constant Voltage Device | |