ET AT&T TEST 6 | ACTUAL COMPLETE
QUESTIONS AND 100% CORRECT
ANSWERS | APPROVED BY EXPERT |
2025 LATEST UPDATE
Question: In a field effect transistor, electrons enter from which terminal and leave through
which terminal, and what controls this flow?
Answer: ✔✔ Electrons enter from the source and leave from the drain. The gate controls
electron flow.
Question: What forms a channel between the source and drain and controls electron flow in a
FET?
Answer: ✔✔ Gate
Question: How do N channel FETs operate?
Answer: ✔✔ By placing a positive voltage on the drain and reverse biasing the gate to source
PN junction
Question: What is transconductance and how is it measured?
Answer: ✔✔ It is the measure of how much control the input voltage has on the output current
and is measured in mhos.
Question: What happens to Id when Vgs increases in a FET biased in the center of its operating
area?
Answer: ✔✔ Id decreases
Question: What is the function of a common source amplifier?
Answer: ✔✔ It inverts the output
, Question: What is a common gate FET typically used for, and what is its input resistance?
Answer: ✔✔ Normally used as a switch, does not have a high input resistance.
Question: What is the function of a common source FET configuration?
Answer: ✔✔ Uses self biasing to establish the operating voltages, produces an amplified
inverted output signal.
Question: How is normal operation of a FET determined?
Answer: ✔✔ By comparing measured AV with calculated AV.
Question: What is the most widely used FET amplifier configuration?
Answer: ✔✔ Common source
Question: What effect does increasing the difference between gate and source voltage have on
drain current?
Answer: ✔✔ Drain current decreases
Question: What is the most common fault in a FET amplifier?
Answer: ✔✔ Failed FET
Question: How does an enhancement-mode MOSFET behave?
Answer: ✔✔ Acts normally like an open switch
Question: How does a depletion-mode MOSFET behave?
Answer: ✔✔ Acts normally like a closed switch.
QUESTIONS AND 100% CORRECT
ANSWERS | APPROVED BY EXPERT |
2025 LATEST UPDATE
Question: In a field effect transistor, electrons enter from which terminal and leave through
which terminal, and what controls this flow?
Answer: ✔✔ Electrons enter from the source and leave from the drain. The gate controls
electron flow.
Question: What forms a channel between the source and drain and controls electron flow in a
FET?
Answer: ✔✔ Gate
Question: How do N channel FETs operate?
Answer: ✔✔ By placing a positive voltage on the drain and reverse biasing the gate to source
PN junction
Question: What is transconductance and how is it measured?
Answer: ✔✔ It is the measure of how much control the input voltage has on the output current
and is measured in mhos.
Question: What happens to Id when Vgs increases in a FET biased in the center of its operating
area?
Answer: ✔✔ Id decreases
Question: What is the function of a common source amplifier?
Answer: ✔✔ It inverts the output
, Question: What is a common gate FET typically used for, and what is its input resistance?
Answer: ✔✔ Normally used as a switch, does not have a high input resistance.
Question: What is the function of a common source FET configuration?
Answer: ✔✔ Uses self biasing to establish the operating voltages, produces an amplified
inverted output signal.
Question: How is normal operation of a FET determined?
Answer: ✔✔ By comparing measured AV with calculated AV.
Question: What is the most widely used FET amplifier configuration?
Answer: ✔✔ Common source
Question: What effect does increasing the difference between gate and source voltage have on
drain current?
Answer: ✔✔ Drain current decreases
Question: What is the most common fault in a FET amplifier?
Answer: ✔✔ Failed FET
Question: How does an enhancement-mode MOSFET behave?
Answer: ✔✔ Acts normally like an open switch
Question: How does a depletion-mode MOSFET behave?
Answer: ✔✔ Acts normally like a closed switch.
