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FET (field-effect transistor) MCQs
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Avg score: 22% • Most missed: “At cut-off, the JFET channel is ..........”
FET (field-effect transistor) MCQs
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25 Questions

1. A JFET is also called ............... transistor
2. The gate voltage in a JFET at which drain current becomes zero is called ........... voltage
3. A certain p-channel E-MOSFET has VGS(th)  = -2V. If VGS= 0V, the drain current is ..........
4. With a JFET, a ratio of output current change against an input voltage change is called as ...........
5. The output characteristics of a JFET closely resemble the output characteristics of a .......... valve
6. Which component is considered to be an “OFF” devic.
7. Which type of JFET bias requires a negative supply voltage?
8. In a JFET, IDSS is known as ..............
9. A “U” shaped, opposite-polarity material built near a JFET-channel center is called the ..........
10. If the reverse bias on the gate of a JFET is increased, then width of the conducting channel ..............
11. The transconductance of a JFET ranges from .................
12. A certain D-MOSFET is biased at VGS = 0 V. Its data sheet specifies IDSS = 20mA and VGS(off)  = -5 V. The value of the drain current is ............
13. A JFET has ........... power gain
14. When not in use, MOSFET pins are kept at the same potential through the use of ............
15. Which JFET configuration would connect a high-resistance signal source to a low-resistance load ?
16. Which of the following devices has the highest input impedance?
17. A JFET is a ............ driven device
18. In the constant-current region, how will the IDS change in an n-channel JFET?
19. For VGS = 0 V, the drain current becomes constant when VDS exceeds .........
20. When VGS = 0 V, a JFET is..........
21. The input impedance of a MOSFET is of the order of ...........
22. When is a vertical channel E-MOSFET used?
23.  In an n-channel JFET, what will happen at the pinch-off voltage?
24. A JFET has three terminals, namely ............
25. The gate of a JFET is ............ biased

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