Bipolar Junction Transistors Quiz

What are the two types of bipolar junction transistors (BJT)?

• NPP and PNN

• PNP and PPP

• NPN and NNN

• NPN and PNP

What is the function of the emitter in a BJT?

• To amplify the signal

• To provide feedback

• To supply majority charge carriers

• To collect majority charge carriers

In a common emitter configuration, what is the input signal applied between?

• Base and collector

• Collector and emitter

• Emitter and ground

• Base and emitter

What happens when the transistor is in cutoff condition?

• It amplifies the signal

• It acts like an open switch

• It provides feedback

• It acts like a closed switch

What is the primary purpose of biasing in a BJT?

• To increase the input resistance

• To establish a fixed level of current and voltage

• To reduce noise

• To enhance frequency response

What is the relationship between collector current (IC), base current (IB), and emitter current (IE)?

• IE = IC - IB

• IE = IC + IB

• IE = IB - IC

• IE = IC * IB

What is the active region of a BJT used for?

• Switching

• Amplification

• Cutoff

• Feedback

What does the term 'beta' (β) refer to in a BJT?

• Input resistance

• Current gain

• Voltage gain

• Power gain

Which configuration has the highest input resistance?

• Common base

• Common emitter

• Common ground

• Common collector

What is the effect of negative feedback in amplifiers?

• Increases input impedance

• Decreases bandwidth

• Increases distortion

• Improves stability