Bipolar junction transistor

A BJT consists of how many PN junctions?

• 1

• 2

• 3

• 4

The three terminals of a BJT are:

• Source, Drain, Gate

• Emitter, Base, Collector

• Anode, Cathode, Gate

• None of the above

Which of the following is NOT a type of BJT?

• NPN

• PNP

• MOSFET

• None of the above

The emitter region in a BJT is:

• Lightly doped

• Moderately doped

• Heavily doped

• Undoped

Which region of the BJT is the thinnest?

• Emitter

• Collector

• Base

• None of the above

The common base configuration has a current gain (α) of:

• α = Ic / Ie

• α = Ic / Ib

• α = Ie / Ib

• None of the above

A BJT can be used as a:

• Switch

• Amplifier

• Both (a) and (b)

• None of the above

For a PNP transistor, the majority charge carriers are:

• Electrons

• Holes

• Both

• None of the above

The primary function of the base in a BJT is to:

• Control current flow

• Supply charge carriers

• Act as an insulator

• None of the above

A BJT operates in saturation region when:

• Both junctions are reverse biased

• Both junctions are forward biased

• Base-emitter junction is forward biased, and collector-base junction is reverse biased

• None of the above