hapter 5. Review Questions

1. How are FETs classified?
2. Explain the operation of a JFET.
3. Explain the construction of a n-channel JFET.
4. Draw and explain the drain characteristics of a JFET.
5. Define the terms pinch-off voltage and breakdown voltage.
6. Write down the parameters of a JFET. What is the relationship among these parameters?
7. Compare a JFET with BJT.
8. List some of the applications of JFETs.
9. What is a MOSFET? Explain the different types of MOSFET.
10.The reverse gate voltage applied to aJFET is 12v. The gate current is 1 nA. Determine the resistance between gate and source.(Ans. 12,000 Mohms)
11.The reverse gate voltage of a Jfet changes from 4.0 to 3.9 V. The drain current changes from 1.3 to 1.6 mA. Find the value of transconductance. (Ans. 3 m mhos)
12.Explain the operation of enhancement and depletion MOSFETs.
13.Compare MOSFET with JFET.
14. Why are n-channel MOSFETs preferred to p- channel MOSFETS?