Field Effect Transistors (FET) problems
- 1. 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
Correct Answer: the value of VDS at which further increases in VDS will cause no further increase in ID
- 2. 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
Correct Answer: the maximum possible current with VGS held at 0 V
- 3. 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
Correct Answer: gate
- 4. What is the input impedance of a common-gate configured JFET?
Options- A. very low
- B. low
- C. high
- D. very high Discuss
Correct Answer: very low
- 5. With the E-MOSFET, when gate input voltage is zero, drain current is:
Options- A. at saturation
- B. zero
- C. IDSS
- D. widening the channel Discuss
Correct Answer: zero
- 6. Which type of JFET bias requires a negative supply voltage?
Options- A. feedback
- B. source
- C. gate
- D. voltage divider Discuss
Correct Answer: gate
- 7. Which component is considered to be an "OFF" device?
Options- A. transistor
- B. JFET
- C. D-MOSFET
- D. E-MOSFET Discuss
Correct Answer: E-MOSFET
- 8. When is a vertical channel E-MOSFET used?
Options- A. for high frequencies
- B. for high voltages
- C. for high currents
- D. for high resistances Discuss
Correct Answer: for high currents
- 9. A very simple bias for a D-MOSFET is called:
Options- A. self biasing
- B. gate biasing
- C. zero biasing
- D. voltage-divider biasing Discuss
Correct Answer: zero biasing
- 10. Junction Field Effect Transistors (JFET) contain how many diodes?
Options- A. 4
- B. 3
- C. 2
- D. 1 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 2
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