FET DEVICES

The BJT is a ________ device. The FET is a ________ device.

• bipolar, bipolar

• bipolar, unipolar

• unipolar, bipolar

• unipolar, unipolar

Which of the following transistor(s) has (have) depletion and enhancement types?

• BJT

• JFET

• MOSFET

• None of the above

Which of the following controls the level of ID?

• VGS

• VDS

• IG

• VDG

The level of VGS that results in ID = 0 mA is defined by VGS = ________.

• VGS(off)

• VP

• VDS

• None of the above

The three terminals of the JFET are the ________, ________, and ________.

• gate, collector, emitter

• base, collector, emitter

• gate, drain, source

• gate, drain, emitter

What is the ratio of ID / IDSS for VGS = 0.5 VP?

• 0.25

• 0.5

• 1

• 0

Which of the following FETs has the lowest input impedance?

• JFET

• MOSFET depletion-type

• MOSFET enhancement-type

• None of the above

Refer to the following curves. Calculate ID at VGS = 1 V.

• 8.167 mA

• 4.167 mA

• 6.167 mA

• 0.616 mA

The region to the left of the pinch-off locus is referred to as the ________ region.

• saturation

• cutoff

• ohmic

• All of the above

Hand-held instruments are available to measure ________ for the BJT.

• βDC

• IDSS

• VP

• All of the above