Discussion
Home ‣ Electronics ‣ Field Effect Transistors (FET) Comments
- Question
JFET terminal "legs" are connections to the drain, the gate, and the:
Options- A. channel
- B. source
- C. substrate
- D. cathode
- Correct Answer
- source
- 1. When the JFET is no longer able to control the current, this point is called the:
Options- A. breakdown region
- B. depletion region
- C. saturation point
- D. pinch-off region Discuss
- 2. When testing an n-channel D-MOSFET, resistance G to D = ∞, resistance G to S = ∞, resistance D to SS = ∞ and 500 Ω, depending on the polarity of the ohmmeter, and resistance D to S = 500 Ω. What is wrong?
Options- A. short D to S
- B. open G to D
- C. open D to SS
- D. nothing Discuss
- 3. What is the most significant development in electronics since World War II?
Options- A. the development of color TV
- B. the development of the diode
- C. the development of the transistor
- D. the development of the TRIAC Discuss
- 4. Electron pair bonding occurs when atoms:
Options- A. lack electrons
- B. share holes
- C. lack holes
- D. share electrons Discuss
- 5. What causes the depletion region?
Options- A. doping
- B. diffusion
- C. barrier potential
- D. ions Discuss
- 6. With a JFET, a ratio of output current change against an input voltage change is called:
Options- A. transconductance
- B. siemens
- C. resistivity
- D. gain Discuss
- 7. How will a D-MOSFET input impedance change with signal frequency?
Options- A. As frequency increases input impedance increases.
- B. As frequency increases input impedance is constant.
- C. As frequency decreases input impedance increases.
- D. As frequency decreases input impedance is constant. Discuss
- 8. The common-source JFET amplifier has:
Options- A. a very high input impedance and a relatively low voltage gain
- B. a high input impedance and a very high voltage gain
- C. a high input impedance and a voltage gain less than 1
- D. no voltage gain Discuss
- 9. With a 30-volt VDD, and an 8-kilohm drain resistor, what is the E-MOSFET Q point voltage, with ID = 3 mA?
Options- A. 6 V
- B. 10 V
- C. 24 V
- D. 30 V Discuss
- 10. D-MOSFETs are sometimes used in series to construct a cascode high-frequency amplifier to overcome the loss of:
Options- A. low output impedance
- B. capacitive reactance
- C. high input impedance
- D. inductive reactance Discuss
Field Effect Transistors (FET) problems
Search Results
Correct Answer: breakdown region
Correct Answer: nothing
Correct Answer: the development of the transistor
Correct Answer: share electrons
Correct Answer: diffusion
Correct Answer: transconductance
Correct Answer: As frequency decreases input impedance increases.
Correct Answer: a very high input impedance and a relatively low voltage gain
Correct Answer: 6 V
Correct Answer: high input impedance
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