What is the primary function of a bipolar junction transistor (BJT)?

The primary function of a BJT is to act as an amplifier or a switch in electronic circuits.

Fill in the blanks: A bipolar junction transistor has ___ terminals known as the Emitter (E), Base (B), and Collector (C).

Three

True or False: The operation of a BJT depends solely on majority carriers.

False. The operation of a BJT depends on both majority and minority carriers.

What are the two types of bipolar transistors based on their construction?

The two types of bipolar transistors are PNP and NPN.

Riddle: I can amplify signals or switch them on and off; I have three terminals but am not a plug. What am I?

A bipolar junction transistor.

In which region does a BJT operate as an amplifier?

In the Active Region.

Fill in the blank: In the saturation region, the current through the BJT is equal to ___(saturation).

I(saturation)

What does the arrow in the circuit symbol of a bipolar transistor indicate?

The arrow indicates the direction of conventional current flow between the base terminal and its emitter terminal.

True or False: The principle of operation for PNP and NPN transistors is different.

False. The principle of operation for PNP and NPN transistors is the same, differing only in biasing and polarity.

What is the role of biasing voltage in a bipolar transistor?

Biasing voltage controls the amount of current flowing through the transistor, allowing it to function as a current-controlled switch.

Fill in the blank: The BJT can operate in the ___ and ___ regions when used as a switch.

Saturation and Cut-off

What are the applications of bipolar junction transistors?

BJTs are used in amplifiers, oscillators, and as switches in digital circuits, with applications in computers and communication systems.

Riddle: I can be fully on or fully off, controlling the flow of current with precision. What am I?

A bipolar junction transistor.

What happens to the collector current (Ic) in the cut-off region?

In the cut-off region, the collector current (Ic) equals 0.

Fill in the blank: The BJT acts as a current-regulating device that controls current in proportion to the amount of ___ applied to its base.

Biasing voltage

What is the significance of the term 'bipolar' in bipolar junction transistors?

'Bipolar' refers to the involvement of both majority and minority charge carriers in the operation of the transistor.

Fill in the blank: The two PN-junctions in a BJT create ___ terminals.

Three

True or False: A BJT can only function in analog electronics.

False. A BJT can function in both analog and digital electronics.

What type of materials are used to construct PNP and NPN transistors?

Transistors use P-type and N-type materials.

• PNP has P-type on top.

• NPN features N-type on top.

• Order affects current flow.

What are the three terminals of a bipolar junction transistor (BJT)?

Emitter (E), Base (B), Collector (C)