Basic Qualification · B-004 Circuit components · B-004-003-007
What are the two basic types of bipolar transistors?
- ANPN and PNP
- BDiode and triode
- CVaricap and varistor
- DP channel and N channel
Correct answer: A — NPN and PNP. From the official ISED question bank, verified word for word.
Why
Bipolar transistors come in two basic arrangements based on how their semiconductor layers are stacked: either a negative layer sandwiched between two positive layers (NPN) or a positive layer between two negative ones (PNP). The full explanation — and one for every question — is in Pro.
Practise this section
Circuit components is section B-004 of the Basic exam: The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.
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