Electronics - Field Effect Transistors (FET)

Exercise :: Field Effect Transistors (FET) - General Questions

21. 

When the JFET is no longer able to control the current, this point is called the:

A. breakdown region
B. depletion region
C. saturation point
D. pinch-off region

Answer: Option A

Explanation:

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22. 

With a JFET, a ratio of output current change against an input voltage change is called:

A. transconductance
B. siemens
C. resistivity
D. gain

Answer: Option A

Explanation:

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23. 

Which type of JFET bias requires a negative supply voltage?

A. feedback
B. source
C. gate
D. voltage divider

Answer: Option C

Explanation:

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24. 

How will a D-MOSFET input impedance change with signal frequency?

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.

Answer: Option C

Explanation:

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25. 

The type of bias most often used with E-MOSFET circuits is:

A. constant current
B. drain-feedback
C. voltage-divider
D. zero biasing

Answer: Option B

Explanation:

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