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Technician Class Exam Question Pool

effective 7/01/2014 thru 6/30/2018

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Topic T6: Electrical Components


T6A-2014: Electrical components: fixed and variable resistors; capacitors and inductors; fuses; switches; batteries

T6A01-2014: What electrical component is used to oppose the flow of current in a DC circuit?

Resistor

Inductor

Voltmeter

Transformer



T6A02-2014: What type of component is often used as an adjustable volume control?

Potentiometer

Fixed resistor

Power resistor

Transformer



T6A03-2014: What electrical parameter is controlled by a potentiometer?

Resistance

Inductance

Capacitance

Field strength



T6A04-2014: What electrical component stores energy in an electric field?

Capacitor

Resistor

Inductor

Diode



T6A05-2014: What type of electrical component consists of two or more conductive surfaces separated by an insulator?

Capacitor

Resistor

Potentiometer

Oscillator



T6A06-2014: What type of electrical component stores energy in a magnetic field?

Inductor

Resistor

Capacitor

Diode



T6A07-2014: What electrical component is usually composed of a coil of wire?

Inductor

Switch

Capacitor

Diode



T6A08-2014: What electrical component is used to connect or disconnect electrical circuits?

Switch

Magnetron

Thermistor

All of these choices are correct



T6A09-2014: What electrical component is used to protect other circuit components from current overloads?

Fuse

Capacitor

Inductor

All of these choices are correct



T6A10-2014: Which of the following battery types is rechargeable?

All of these choices are correct

Nickel-metal hydride

Lithium-ion

Lead-acid gel-cell



T6A11-2014: Which of the following battery types is not rechargeable?

Carbon-zinc

Nickel-cadmium

Lead-acid

Lithium-ion






T6B-2014: Semiconductors: basic principles and applications of solid state devices; diodes and transistors

T6B01-2014: What class of electronic components is capable of using a voltage or current signal to control current flow?

Transistors

Capacitors

Inductors

Resistors



T6B02-2014: What electronic component allows current to flow in only one direction?

Diode

Resistor

Fuse

Driven Element



T6B03-2014: Which of these components can be used as an electronic switch or amplifier?

Transistor

Oscillator

Potentiometer

Voltmeter



T6B04-2014: Which of the following components can be made of three layers of semiconductor material?

Transistor

Alternator

Triode

Pentagrid converter



T6B05-2014: Which of the following electronic components can amplify signals?

Transistor

Variable resistor

Electrolytic capacitor

Multi-cell battery



T6B06-2014: How is the cathode lead of a semiconductor diode usually identified?

With a stripe

With the word cathode

With the letter C

All of these choices are correct



T6B07-2014: What does the abbreviation LED stand for?

Light Emitting Diode

Low Emission Diode

Liquid Emission Detector

Long Echo Delay



T6B08-2014: What does the abbreviation FET stand for?

Field Effect Transistor

Fast Electron Transistor

Free Electron Transition

Field Emission Thickness



T6B09-2014: What are the names of the two electrodes of a diode?

Anode and cathode

Plus and minus

Source and drain

Gate and base



T6B10-2014: What are the three electrodes of a PNP or NPN transistor?

Emitter, base, and collector

Source, gate, and drain

Cathode, grid, and plate

Cathode, drift cavity, and collector



T6B11-2014: What at are the three electrodes of a field effect transistor?

Source, gate, and drain

Emitter, base, and collector

Cathode, grid, and plate

Cathode, gate, and anode



T6B12-2014: What is the term that describes a transistor's ability to amplify a signal?

Gain

Forward resistance

Forward voltage drop

On resistance






T6C-2014: Circuit diagrams; schematic symbols

T6C01-2014: What is the name for standardized representations of components in an electrical wiring diagram?

Schematic symbols

Electrical depictions

Grey sketch

Component callouts



T6C02-2014: What is component 1 in figure T1?

Resistor

Transistor

Battery

Connector



T6C03-2014: What is component 2 in figure T1?

Transistor

Resistor

Indicator lamp

Connector



T6C04-2014: What is component 3 in figure T1?

Lamp

Resistor

Transistor

Ground symbol



T6C05-2014: What is component 4 in figure T1?

Battery

Resistor

Transistor

Ground symbol



T6C06-2014: What is component 6 in figure T2?

Capacitor

Resistor

Regulator IC

Transistor



T6C07-2014: What is component 8 in figure T2?

Light emitting diode

Resistor

Inductor

Regulator IC



T6C08-2014: What is component 9 in figure T2?

Variable resistor

Variable capacitor

Variable inductor

Variable transformer



T6C09-2014: What is component 4 in figure T2?

Transformer

Variable inductor

Double-pole switch

Potentiometer



T6C10-2014: What is component 3 in figure T3?

Variable inductor

Connector

Meter

Variable capacitor



T6C11-2014: What is component 4 in figure T3?

Antenna

Transmitter

Dummy load

Ground



T6C12-2014: What do the symbols on an electrical circuit schematic diagram represent?

Electrical components

Logic states

Digital codes

Traffic nodes



T6C13-2014: Which of the following is accurately represented in electrical circuit schematic diagrams?

The way components are interconnected

Wire lengths

Physical appearance of components

All of these choices are correct






T6D-2014: Component functions: rectification; switches; indicators; power supply components; resonant circuit; shielding; power transformers; integrated circuits

T6D01-2014: Which of the following devices or circuits changes an alternating current into a varying direct current signal?

Rectifier

Transformer

Amplifier

Reflector



T6D02-2014: What best describes a relay?

A switch controlled by an electromagnet

A current controlled amplifier

An optical sensor

A pass transistor



T6D03-2014: What type of switch is represented by component 3 in figure T2?

Single-pole single-throw

Single-pole double-throw

Double-pole single-throw

Double-pole double-throw



T6D04-2014: Which of the following can be used to display signal strength on a numeric scale?

Meter

Potentiometer

Transistor

Relay



T6D05-2014: What type of circuit controls the amount of voltage from a power supply?

Regulator

Oscillator

Filter

Phase inverter



T6D06-2014: What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?

Transformer

Variable capacitor

Transistor

Diode



T6D07-2014: Which of the following is commonly used as a visual indicator?

LED

FET

Zener diode

Bipolar transistor



T6D08-2014: Which of the following is used together with an inductor to make a tuned circuit?

Capacitor

Resistor

Zener diode

Potentiometer



T6D09-2014: What is the name of a device that combines several semiconductors and other components into one package?

Integrated circuit

Transducer

Multi-pole relay

Transformer



T6D10-2014: What is the function of component 2 in Figure T1?

Control the flow of current

Give off light when current flows through it

Supply electrical energy

Convert electrical energy into radio waves



T6D11-2014: What is a simple resonant or tuned circuit?

An inductor and a capacitor connected in series or parallel to form a filter

A type of voltage regulator

A resistor circuit used for reducing standing wave ratio

A circuit designed to provide high fidelity audio



T6D12-2014: Which of the following is a common reason to use shielded wire?

To prevent coupling of unwanted signals to or from the wire

To decrease the resistance of DC power connections

To increase the current carrying capability of the wire

To couple the wire to other signals





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