ET AT&T TEST 6 | QUESTIONS AND CORRECT SOLUTIONS | VERIFIED BY EXPERT | GUARANTEED PASS | 2025

ET AT&T TEST 6 | QUESTIONS AND
CORRECT SOLUTIONS | VERIFIED BY
EXPERT | GUARANTEED PASS | 2025
Q: Electrons enter the ___ from the source and leave from the drain. The gate controls electron
flow.
A: ✔✔ Field Effect Transistor



Q: What forms a channel between the source and drain and controls electron flow?
A: ✔✔ Gate



Q: How do N-channel FETs operate?
A: ✔✔ By placing a positive voltage on the drain and reverse biasing the gate-to-source PN
junction



Q: What is transconductance?
A: ✔✔ A measure of how much control the input voltage has on the output current (measured
in mhos)



Q: With a FET biased in the center of its operating area, what happens to Id when Vgs
increases?
A: ✔✔ Id decreases



Q: What is a Common Source Amplifier’s key behavior?
A: ✔✔ Inverts the output

, Q: Which FET configuration is normally used as a switch and does not have high input
resistance?
A: ✔✔ Common Gate FET



Q: Which FET uses self-biasing and produces an amplified inverted signal?
A: ✔✔ Common Source FET



Q: What determines normal operation in FET amplifiers?
A: ✔✔ Comparing measured Av with calculated Av



Q: What is the most widely used FET amplifier configuration?
A: ✔✔ Common Source



Q: What happens to drain current when the difference between gate and source voltage
increases?
A: ✔✔ Drain current decreases



Q: What is the most common fault in a FET amplifier?
A: ✔✔ Failed FET



Q: What is the normal state of an enhancement-mode MOSFET?
A: ✔✔ Open switch



Q: What is the normal state of a depletion-mode MOSFET?
A: ✔✔ Closed switch



Q: What do sine wave oscillators do?
A: ✔✔ Convert DC energy into AC energy using an amplifier and feedback