Discussion
Home ‣ Electronics ‣ Field Effect Transistors (FET) Comments
- Question
When an input signal reduces the channel size, the process is called:
Options- A. enhancement
- B. substrate connecting
- C. gate charge
- D. depletion
- Correct Answer
- depletion
- 1. In the constant-current region, how will the IDS change in an n-channel JFET?
Options- A. As VGS decreases ID decreases.
- B. As VGS increases ID increases.
- C. As VGS decreases ID remains constant.
- D. As VGS increases ID remains constant. Discuss
- 2. What is the transconductance of an FET when △ID = 1 mA and △VGS = 1 V?
Options- A. 1 kS
- B. 1 mS
- C. 1 kΩ
- D. 1 mΩ Discuss
- 3. Which JFET configuration would connect a high-resistance signal source to a low-resistance load?
Options- A. source follower
- B. common-source
- C. common-drain
- D. common-gate Discuss
- 4. When applied input voltage varies the resistance of a channel, the result is called:
Options- A. saturization
- B. polarization
- C. cutoff
- D. field effect Discuss
- 5. When VGS = 0 V, a JFET is:
Options- A. saturated
- B. an analog device
- C. an open switch
- D. cut off Discuss
- 6. The overall input capacitance of a dual-gate D-MOSFET is lower because the devices are usually connected:
Options- A. in parallel
- B. with separate insulation
- C. with separate inputs
- D. in series Discuss
- 7. In an n-channel JFET, what will happen at the pinch-off voltage?
Options- A. the value of VDS at which further increases in VDS will cause no further increase in ID
- B. the value of VGS at which further decreases in VGS will cause no further increases in ID
- C. the value of VDG at which further decreases in VDG will cause no further increases in ID
- D. the value of VDS at which further increases in VGS will cause no further increases in ID Discuss
- 8. IDSS can be defined as:
Options- A. the minimum possible drain current
- B. the maximum possible current with VGS held at ?4 V
- C. the maximum possible current with VGS held at 0 V
- D. the maximum drain current with the source shorted Discuss
- 9. A "U" shaped, opposite-polarity material built near a JFET-channel center is called the:
Options- A. gate
- B. block
- C. drain
- D. heat sink Discuss
- 10. What is the input impedance of a common-gate configured JFET?
Options- A. very low
- B. low
- C. high
- D. very high Discuss
Field Effect Transistors (FET) problems
Search Results
Correct Answer: As VGS decreases ID decreases.
Correct Answer: 1 mS
Correct Answer: source follower
Correct Answer: field effect
Correct Answer: saturated
Correct Answer: in series
Correct Answer: the value of VDS at which further increases in VDS will cause no further increase in ID
Correct Answer: the maximum possible current with VGS held at 0 V
Correct Answer: gate
Correct Answer: very low
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