US_TECH_2026_2030
Technician 2026-2030 - Electronic components and circuits
Electronic components and circuits groups the T6 section questions for focused review and easier weak-point tracking.
46
Questions
9
Sibling Topics
- Pool
- Technician 2026-2030
- Questions
- 46
- Topic
- Electronic components and circuits
- Region
- US
Read the condition in the stem before comparing key terms in the options.
Study rules, calculations, and equipment questions as separate patterns.
After this topic, return to the full pool for mixed practice.
Topic Study Guide
This topic covers the fundamentals of electronic components and circuits from the T6 section of the FCC Technician exam. The focus is on identifying the functions of common components, basic characteristics of semiconductors, and reading standard schematic symbols.
High-Yield Checks
- Basic passive components: Resistor (opposes DC), Capacitor (insulator between conductors), Inductor (coil), and Transformer (changes AC voltage).
- Semiconductors: Diode (one-way current, cathode marked with stripe), Transistor (BJT electrodes: emitter, base, collector; FET: Field Effect Transistor; provides power gain).
- Schematic symbols: Master basic symbols (resistor zig-zag, inductor coil, capacitor parallel lines) and modifiers (arrow indicates variable).
- Switches and relays: Differentiate switch types like SPST, and know that a relay is an electrically-controlled switch.
- Resonant circuits: Formed by combining an inductor and a capacitor.
Trap Patterns
- Confusing component functions: e.g., thinking a transformer changes AC to DC (it changes AC to AC), or a diode limits current instead of directing it.
- Misinterpreting schematic symbols: Confusing a resistor (zig-zag) with an inductor (loops), or missing the diagonal arrow indicating a "variable" component.
- Misunderstanding schematics: Incorrectly assuming schematics show physical wire lengths or component appearance, rather than just logical connections.
- Mixing up transistor electrodes: Confusing the pins of a bipolar junction transistor (BJT) with those of other device types.
Review Steps
- Memorize the core functions of basic passive components (resistor, capacitor, inductor, transformer).
- Learn the names, acronyms, and basic roles of active components (diode, BJT, FET).
- Review the schematic figures (T-1, T-2, T-3) in the pool and practice matching visual symbols to component names.
- Differentiate easily confused concepts, such as switch types (SPST/SPDT) and batteries (primary vs. rechargeable).
Quick Checks
- Can you differentiate the schematic symbols for a variable resistor and a fixed resistor?
- Which electronic component allows current to flow in only one direction?
- What two components are required to create a resonant circuit?
- Can you name the three electrodes of a bipolar junction transistor (BJT)?
Questions in This Topic
Choose Practice ModeT6A01What electrical component opposes the flow of current in a DC circuit?T6A02What type of component is often used as an adjustable volume control?T6A03What electrical parameter is controlled by a potentiometer?T6A04What electrical component stores energy in an electric field?T6A05What type of electrical component consists of conductive surfaces separated by an insulator?T6A06What type of electrical component stores energy in a magnetic field?T6A07What electrical component is typically constructed as a coil of wire?T6A08What is the function of an SPDT switch?T6A09What type of switch is represented by component 3 in figure T-2?T6A10Which of the following battery chemistries is rechargeable?T6A11Which of the following battery chemistries is not rechargeable?T6B01Which is true about forward voltage drop in a diode?T6B02What electronic component allows current to flow in only one direction?T6B03Which of these components can be used as an electronic switch?T6B04Which of the following components can consist of three regions of semiconductor material?T6B05What type of transistor has a gate, drain, and source?T6B06How is the cathode lead of a semiconductor diode often marked on the package?T6B07What causes a light-emitting diode (LED) to emit light?T6B08What does the abbreviation FET stand for?T6B09What are the names for the electrodes of a diode?T6B10Which of the following can provide power gain?T6B11What does the term gain mean in amplifiers?T6B12What are the names of the electrodes of a bipolar junction transistor?T6C01What is an electrical diagram using standard component symbols called?T6C02What is component 1 in figure T-1?T6C03What is component 2 in figure T-1?T6C04What is component 3 in figure T-1?T6C05What is component 4 in figure T-1?T6C06What is component 6 in figure T-2?T6C07What is component 8 in figure T-2?T6C08What is component 9 in figure T-2?T6C09What is component 4 in figure T-2?T6C10What is component 3 in figure T-3?T6C11What is component 4 in figure T-3?T6C12Which of the following is accurately represented in electrical schematics?T6D01Which of the following devices or circuits changes an alternating current into a varying direct current signal?T6D02What is a relay?T6D03Which of the following is a reason to use shielded wire?T6D04Which of the following displays an electrical quantity as a numeric value?T6D05What type of circuit controls the amount of voltage from a power supply?T6D06What component changes 120 V AC power to a lower AC voltage for other uses?T6D07Which of the following is commonly used as a visual indicator?T6D08Which of the following is combined with an inductor to make a resonant circuit?T6D09What is the name of a device that combines several semiconductors and other components into one package?T6D10What is the function of component 2 in figure T-1?T6D11Which of the following is a resonant or tuned circuit?
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