T6B04: Transistor: Of the following components can consist

Q: Which of the following components can consist of three regions of semiconductor material?

The correct answer is B: Transistor. The correct answer is B: Transistor. A transistor is the component that can consist of three regions of semiconductor material. Transistors have three regions: emitter, base, and collector (bipolar) or source, gate, and drain (FET). Transistors are three-terminal semiconductor devices with three regions of semiconductor material. Bipolar transistors have NPN or PNP structures with three regions (emitter, base, collector). Field-effect transistors (FETs) have three regions (source, gate, drain). These three regions allow the transistor to amplify signals or switch currents. The three-region structure is fundamental to how transistors work - the middle region controls current flow between the outer regions.

Updated: Dec 9, 2025 | Source: 2022-2026 Question Pool | Topic: T6B

T6B04T6B

Which of the following components can consist of three regions of semiconductor material?

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Deep Dive: T6B04

The correct answer is B: Transistor. A transistor is the component that can consist of three regions of semiconductor material. Transistors have three regions: emitter, base, and collector (bipolar) or source, gate, and drain (FET). Transistors are three-terminal semiconductor devices with three regions of semiconductor material. Bipolar transistors have NPN or PNP structures with three regions (emitter, base, collector). Field-effect transistors (FETs) have three regions (source, gate, drain). These three regions allow the transistor to amplify signals or switch currents. The three-region structure is fundamental to how transistors work - the middle region controls current flow between the outer regions.

Why Other Answers Are Wrong

Option A: Incorrect. Alternators are electromechanical devices that generate AC power, not semiconductor devices with three regions. They're rotating machines, not transistors. Option C: Incorrect. Triodes are vacuum tubes with three electrodes (cathode, grid, plate), not semiconductor devices. They're obsolete components, not modern transistors. Option D: Incorrect. Pentagrid converters are vacuum tubes with five grids, not semiconductor devices with three regions. They're obsolete components used in old radios.

Exam Tip

Transistor = Three semiconductor regions. Remember: Transistors consist of three regions of semiconductor material - emitter/base/collector (bipolar) or source/gate/drain (FET).

Memory Aid

**T**ransistor = **T**hree **R**egions (think 'T = TR')

Real-World Example

You're examining a transistor. It has three terminals connected to three regions of semiconductor material. In a bipolar transistor, these are the emitter, base, and collector. The three-region structure allows the transistor to amplify signals - a small current in the base controls a larger current between emitter and collector.

Source & Coverage

Question Pool: 2022-2026 Question Pool

Subelement: T6B

Reference: 2022-2026 Question Pool · T6 - Electrical components

Key Concepts

Transistor Three regions Semiconductor structure Bipolar transistor

Verified Content

Question from the official FCC Technician Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the T6B topic.