OpenLLM-France/wikimedia huggingface dataset:
# FCC Technician Class Exam Study Guide - 2014-2018/Subelement T5 Group C

Electronic principles: capacitance; inductance; current flow in circuits; alternating current; definition of RF; DC power calculations; impedance

## The Question Pool
### Question 1
#### What is the ability to store energy in an electric field called?

    A. Inductance
    B. Resistance
    C. Tolerance
    D. Capacitance
The correct answer is D.

### Question 2
#### What is the basic unit of capacitance?

    A. The farad
    B. The ohm
    C. The volt
    D. The henry
The correct answer is A.

### Question 3
#### What is the ability to store energy in a magnetic field called?

    A. Admittance
    B. Capacitance
    C. Resistance
    D. Inductance
The correct answer is D.

### Question 4
#### What is the basic unit of inductance?

    A. The coulomb
    B. The farad
    C. The henry
    D. The ohm
The correct answer is C.

### Question 5
#### What is the unit of frequency?

    A. Hertz
    B. Henry
    C. Farad
    D. Tesla
The correct answer is A.

### Question 6
#### What does the abbreviation "RF" refer to?

    A. Radio frequency signals of all types
    B. The resonant frequency of a tuned circuit
    C. The real frequency transmitted as opposed to the apparent frequency
    D. Reflective force in antenna transmission lines
The correct answer is A.

### Question 7
#### What is a usual name for electromagnetic waves that travel through space?

    A. Gravity waves
    B. Sound waves
    C. Radio waves
    D. Pressure waves
The correct answer is C.

### Question 8
#### What is the formula used to calculate electrical power in a DC circuit?

    A. Power (P) equals voltage (E) multiplied by current (I)
    B. Power (P) equals voltage (E) divided by current (I)
    C. Power (P) equals voltage (E) minus current (I)
    D. Power (P) equals voltage (E) plus current (I)
The correct answer is A.

### Question 9
#### How much power is being used in a circuit when the applied voltage is 13.8 volts DC and the current is 10 amperes?

    A. 138 watts
    B. 0.7 watts
    C. 23.8 watts
    D. 3.8 watts
The correct answer is A.

### Question 10
#### How much power is being used in a circuit when the applied voltage is 12 volts DC and the current is 2.5 amperes?

    A. 4.8 watts
    B. 30 watts
    C. 14.5 watts
    D. 0.208 watts
The correct answer is B.

### Question 11
#### How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?

    A. 0.1 amperes
    B. 10 amperes
    C. 12 amperes
    D. 132 amperes
The correct answer is B.

### Question 12
#### What is meant by the term impedance?

    A. It is a measure of the opposition to AC current flow in a circuit
    B. It is the inverse of resistance
    C. It is a measure of the Q or Quality Factor of a component
    D. It is a measure of the power handling capability of a component
The correct answer is A.

### Question 13
#### What are the units of impedance?

    A. Volts
    B. Amperes
    C. Coulombs
    D. Ohms
The correct answer is D.
# FCC Technician Class Exam Study Guide - 2014-2018/Subelement T5 Group D

Ohm's Law: formulas and usage

## The Question Pool
### Question 1
#### What formula is used to calculate current in a circuit?

    A. Current (I) equals voltage (E) multiplied by resistance (R)
    B. Current (I) equals voltage (E) divided by resistance (R)
    C. Current (I) equals voltage (E) added to resistance (R)
    D. Current (I) equals voltage (E) minus resistance (R)
The correct answer is B.

### Question 2
#### What formula is used to calculate voltage in a circuit?

    A. Voltage (E) equals current (I) multiplied by resistance (R)
    B. Voltage (E) equals current (I) divided by resistance (R)
    C. Voltage (E) equals current (I) added to resistance (R)
    D. Voltage (E) equals current (I) minus resistance (R)
The correct answer is A.

### Question 3
#### What formula is used to calculate resistance in a circuit?

    A. Resistance (R) equals voltage (E) multiplied by current (I)
    B. Resistance (R) equals voltage (E) divided by current (I)
    C. Resistance (R) equals voltage (E) added to current (I)
    D. Resistance (R) equals voltage (E) minus current (I)
The correct answer is B.

### Question 4
#### What is the resistance of a circuit in which a current of 3 amperes flows through a resistor connected to 90 volts?

    A. 3 ohms
    B. 30 ohms
    C. 93 ohms
    D. 270 ohms
The correct answer is B.

### Question 5

What is the resistance in a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?
    A. 18 ohms
    B. 0.125 ohms
    C. 8 ohms
    D. 13.5 ohms
The correct answer is C.

### Question 6
#### What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

    A. 3 ohms
    B. 16 ohms
    C. 48 ohms
    D. 8 Ohms
The correct answer is A.

### Question 7
#### What is the current flow in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

    A. 9600 amperes
    B. 200 amperes
    C. 0.667 amperes
    D. 1.5 amperes
The correct answer is D.

### Question 8
#### What is the current flowing through a 100-ohm resistor connected across 200 volts?

    A. 20,000 amperes
    B. 0.5 amperes
    C. 2 amperes
    D. 100 amperes
The correct answer is C.

### Question 9
#### What is the current flowing through a 24-ohm resistor connected across 240 volts?

    A. 24,000 amperes
    B. 0.1 amperes
    C. 10 amperes
    D. 216 amperes
The correct answer is C.

### Question 10
#### What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?

    A. 1 volt
    B. 0.25 volts
    C. 2.5 volts
    D. 1.5 volts
The correct answer is A.

### Question 11
#### What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

    A. 1 volt
    B. 10 volts
    C. 11 volts
    D. 9 volts
The correct answer is B.

### Question 12
#### What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

    A. 8 volts
    B. 0.2 volts
    C. 12 volts
    D. 20 volts
The correct answer is D.
# FCC Technician Class Exam Study Guide - 2014-2018/Subelement T6 Group C

Circuit diagrams; schematic symbols

## The Question Pool
### Question 1
#### What is the name for standardized representations of components in an electrical wiring diagram?

    A. Electrical depictions
    B. Grey sketch
    C. Schematic symbols
    D. Component callouts
The correct answer is C.

### Question 2
#### What is component 1 in figure T1?

    A. Resistor
    B. Transistor
    C. Battery
    D. Connector
The correct answer is A.

### Question 3
#### What is component 2 in figure T1?

    A. Resistor
    B. Transistor
    C. Indicator lamp
    D. Connector
The correct answer is B.

### Question 4
#### What is component 3 in figure T1?

    A. Resistor
    B. Transistor
    C. Lamp
    D. Ground symbol
The correct answer is C.

### Question 5
#### What is component 4 in figure T1?

    A. Resistor
    B. Transistor
    C. Battery
    D. Ground symbol
The correct answer is C.

### Question 6
#### What is component 6 in figure T2?

    A. Resistor
    B. Capacitor
    C. Regulator IC
    D. Transistor
The correct answer is B.

### Question 7
#### What is component 8 in figure T2?

    A. Resistor
    B. Inductor
    C. Regulator IC
    D. Light emitting diode
The correct answer is D.

### Question 8
#### What is component 9 in figure T2?

    A. Variable capacitor
    B. Variable inductor
    C. Variable resistor
    D. Variable transformer
The correct answer is C.

### Question 9
#### What is component 4 in figure T2?

    A. Variable inductor
    B. Double-pole switch
    C. Potentiometer
    D. Transformer
The correct answer is D.

### Question 10
#### What is component 3 in figure T3?

    A. Connector
    B. Meter
    C. Variable capacitor
    D. Variable inductor
The correct answer is D.

### Question 11
#### What is component 4 in figure T3?

    A. Antenna
    B. Transmitter
    C. Dummy load
    D. Ground
The correct answer is A.

### Question 12
#### What do the symbols on an electrical circuit schematic diagram represent?

    A. Electrical components
    B. Logic states
    C. Digital codes
    D. Traffic nodes
The correct answer is A.

### Question 13
#### Which of the following is accurately represented in electrical circuit schematic diagrams?

    A. Wire lengths
    B. Physical appearance of components
    C. The way components are interconnected
    D. All of these choices are correct
The correct answer is C.
# FCC Technician Class Exam Study Guide - 2014-2018/Subelement T5 Group A

Electrical principles, units, and terms: current and voltage; conductors and insulators; alternating and direct current

## The Question Pool
### Question 1
#### Electrical current is measured in which of the following units?

    A. Volts
    B. Watts
    C. Ohms
    D. Amperes
The correct answer is D.

### Question 2
#### Electrical power is measured in which of the following units?

    A. Volts
    B. Watts
    C. Ohms
    D. Amperes
The correct answer is B.

### Question 3
#### What is the name for the flow of electrons in an electric circuit?

    A. Voltage
    B. Resistance
    C. Capacitance
    D. Current
The correct answer is D.

### Question 4
#### What is the name for a current that flows only in one direction?

    A. Alternating current
    B. Direct current
    C. Normal current
    D. Smooth current
The correct answer is B.

### Question 5
#### What is the electrical term for the electromotive force (EMF) that causes electron flow?

    A. Voltage
    B. Ampere-hours
    C. Capacitance
    D. Inductance
The correct answer is A.

### Question 6
#### How much voltage does a mobile transceiver usually require?

    A. About 12 volts
    B. About 30 volts
    C. About 120 volts
    D. About 240 volts
The correct answer is A.

### Question 7
#### Which of the following is a good electrical conductor?

    A. Glass
    B. Wood
    C. Copper
    D. Rubber
The correct answer is C.

### Question 8
#### Which of the following is a good electrical insulator?

    A. Copper
    B. Glass
    C. Aluminum
    D. Mercury
The correct answer is B.

### Question 9
#### What is the name for a current that reverses direction on a regular basis?

    A. Alternating current
    B. Direct current
    C. Circular current
    D. Vertical current
The correct answer is A.

### Question 10
#### Which term describes the rate at which electrical energy is used?

    A. Resistance
    B. Current
    C. Power
    D. Voltage
The correct answer is C.

### Question 11
#### What is the basic unit of electromotive force?

    A. The volt
    B. The watt
    C. The ampere
    D. The ohm
The correct answer is A.

### Question 12
#### What term describes the number of times per second that an alternating current reverses direction?

    A. Pulse rate
    B. Speed
    C. Wavelength
    D. Frequency
The correct answer is D.
# FCC Technician Class Exam Study Guide - 2014-2018/Subelement T5 Group B

Math for electronics: conversion of electrical units; decibels; the metric system

## The Question Pool
### Question 1
#### How many milliamperes is 1.5 amperes?

    A. 15 milliamperes
    B. 150 milliamperes
    C. 1,500 milliamperes
    D. 15,000 milliamperes
The correct answer is C.

### Question 2
#### What is another way to specify a radio signal frequency of 1,500,000 hertz?

    A. 1500 kHz
    B. 1500 MHz
    C. 15 GHz
    D. 150 kHz
The correct answer is A.

### Question 3
#### How many volts are equal to one kilovolt?

    A. One one-thousandth of a volt
    B. One hundred volts
    C. One thousand volts
    D. One million volts
The correct answer is C.

### Question 4
#### How many volts are equal to one microvolt?

    A. One one-millionth of a volt
    B. One million volts
    C. One thousand kilovolts
    D. One one-thousandth of a volt
The correct answer is A.

### Question 5
#### Which of the following is equivalent to 500 milliwatts?

    A. 0.02 watts
    B. 0.5 watts
    C. 5 watts
    D. 50 watts
The correct answer is B.

### Question 6
#### If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?

    A. 0.003 amperes
    B. 0.3 amperes
    C. 3 amperes
    D. 3,000,000 amperes
The correct answer is C.

### Question 7
#### If a frequency readout calibrated in megahertz shows a reading of 3.525 MHz, what would it show if it were calibrated in kilohertz?

    A. 0.003525 kHz
    B. 35.25 kHz
    C. 3525 kHz
    D. 3,525,000 kHz
The correct answer is C.

### Question 8
#### How many microfarads are 1,000,000 picofarads?

    A. 0.001 microfarads
    B. 1 microfarad
    C. 1000 microfarads
    D. 1,000,000,000 microfarads
The correct answer is B.

### Question 9
#### What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?

    A. 2 dB
    B. 3 dB
    C. 5 dB
    D. 10 dB
The correct answer is B.

### Question 10
#### What is the approximate amount of change, measured in decibels (dB), of a power decrease from 12 watts to 3 watts?

    A. -1 dB
    B. -3 dB
    C. -6 dB
    D. -9 dB
The correct answer is C.

### Question 11
#### What is the approximate amount of change, measured in decibels (dB), of a power increase from 20 watts to 200 watts?

    A. 10 dB
    B. 12 dB
    C. 18 dB
    D. 28 dB
The correct answer is A.

### Question 12
#### Which of the following frequencies is equal to 28,400 kHz?

    A. 28.400 MHz
    B. 2.800 MHz
    C. 284.00 MHz
    D. 28.400 kHz
The correct answer is A.

### Question 13
#### If a frequency readout shows a reading of 2425 MHz, what frequency is that in GHz?

    A. 0.002425 GHZ
    B. 24.25 GHz
    C. 2.425 GHz
    D. 2425 GHz
The correct answer is C.
# FCC Technician Class Exam Study Guide - 2014-2018/Subelement T6 Group D

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

## The Question Pool
### Question 1
#### Which of the following devices or circuits changes an alternating current into a varying direct current signal?

    A. Transformer
    B. Rectifier
    C. Amplifier
    D. Reflector
The correct answer is B.

### Question 2
#### What best describes a relay?

    A. A switch controlled by an electromagnet
    B. A current controlled amplifier
    C. An optical sensor
    D. A pass transistor
The correct answer is A.

### Question 3
#### What type of switch is represented by component 3 in figure T2?

    A. Single-pole single-throw
    B. Single-pole double-throw
    C. Double-pole single-throw
    D. Double-pole double-throw
The correct answer is A.

### Question 4
#### Which of the following can be used to display signal strength on a numeric scale?

    A. Potentiometer
    B. Transistor
    C. Meter
    D. Relay
The correct answer is C.

### Question 5
#### What type of circuit controls the amount of voltage from a power supply?

    A. Regulator
    B. Oscillator
    C. Filter
    D. Phase inverter
The correct answer is A.

### Question 6
#### What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?

    A. Variable capacitor
    B. Transformer
    C. Transistor
    D. Diode
The correct answer is B.

### Question 7
#### Which of the following is commonly used as a visual indicator?

    A. LED
    B. FET
    C. Zener diode
    D. Bipolar transistor
The correct answer is A.

### Question 8
#### Which of the following is used together with an inductor to make a tuned circuit?

    A. Resistor
    B. Zener diode
    C. Potentiometer
    D. Capacitor
The correct answer is D.

### Question 9
#### What is the name of a device that combines several semiconductors and other components into one package?

    A. Transducer
    B. Multi-pole relay
    C. Integrated circuit
    D. Transformer
The correct answer is C.

### Question 10
#### What is the function of component 2 in Figure T1?

    A. Give off light when current flows through it
    B. Supply electrical energy
    C. Control the flow of current
    D. Convert electrical energy into radio waves
The correct answer is C.

### Question 11
#### What is a simple resonant or tuned circuit?

    A. An inductor and a capacitor connected in series or parallel to form a filter
    B. A type of voltage regulator
    C. A resistor circuit used for reducing standing wave ratio
    D. A circuit designed to provide high fidelity audio
The correct answer is A.

### Question 12
#### Which of the following is a common reason to use shielded wire?

    A. To decrease the resistance of DC power connections
    B. To increase the current carrying capability of the wire
    C. To prevent coupling of unwanted signals to or from the wire
    D. To couple the wire to other signals
The correct answer is C.
# FCC Technician Class Exam Study Guide - 2014-2018/Subelement T7 Group A

Station equipment: receivers; transmitters; transceivers; modulation; transverters; low power and weak signal operation; transmit and receive amplifiers

## The Question Pool
### Question 1
#### Which term describes the ability of a receiver to detect the presence of a signal?

    A. Linearity
    B. Sensitivity
    C. Selectivity
    D. Total Harmonic Distortion
The correct answer is B.

### Question 2
#### What is a transceiver?

    A. A type of antenna switch
    B. A unit combining the functions of a transmitter and a receiver
    C. A component in a repeater which filters out unwanted interference
    D. A type of antenna matching network
The correct answer is B.

### Question 3
#### Which of the following is used to convert a radio signal from one frequency to another?

    A. Phase splitter
    B. Mixer
    C. Inverter
    D. Amplifier
The correct answer is B.

### Question 4
#### Which term describes the ability of a receiver to discriminate between multiple signals?

    A. Discrimination ratio
    B. Sensitivity
    C. Selectivity
    D. Harmonic Distortion
The correct answer is C.

### Question 5
#### What is the name of a circuit that generates a signal of a desired frequency?

    A. Reactance modulator
    B. Product detector
    C. Low-pass filter
    D. Oscillator
The correct answer is D.

### Question 6
#### What device takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal?

    A. High-pass filter
    B. Low-pass filter
    C. Transverter
    D. Phase converter
The correct answer is C.

### Question 7
#### What is meant by term “PTT”?

    A. Pre-transmission tuning to reduce transmitter harmonic emission
    B. Precise tone transmissions used to limit repeater access to only certain signals
    C. A primary transformer tuner use to match antennas
    D. The push to talk function which switches between receive and transmit
The correct answer is D.

### Question 8
#### Which of the following describes combining speech with an RF carrier signal?-

    A. Impedance matching
    B. Oscillation
    C. Modulation
    D. Low-pass filtering
The correct answer is C.

### Question 9
#### Which of the following devices is most useful for VHF weak-signal communication?

    A. A quarter-wave vertical antenna
    B. A multi-mode VHF transceiver
    C. An omni-directional antenna
    D. A mobile VHF FM transceiver
The correct answer is B.

### Question 10
#### What device increases the low-power output from a handheld transceiver?

    A. A voltage divider
    B. An RF power amplifier
    C. An impedance network
    D. All of these choices are correct
The correct answer is B.

### Question 11
#### Where is a RF preamplifier installed?

    A. Between the antenna and receiver
    B. At the output of the transmitter's power amplifier
    C. Between a transmitter and antenna tuner
    D. At the receiver's audio output
The correct answer is A.
# FCC Technician Class Exam Study Guide - 2014-2018/Subelement T6 Group A

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

## The Question Pool
### Question 1
#### What electrical component is used to oppose the flow of current in a DC circuit?

    A. Inductor
    B. Resistor
    C. Voltmeter
    D. Transformer
The correct answer is B.

### Question 2
#### What type of component is often used as an adjustable volume control?

    A. Fixed resistor
    B. Power resistor
    C. Potentiometer
    D. Transformer
The correct answer is C.

### Question 3
#### What electrical parameter is controlled by a potentiometer?

    A. Inductance
    B. Resistance
    C. Capacitance
    D. Field strength
The correct answer is B.

### Question 4
#### What electrical component stores energy in an electric field?

    A. Resistor
    B. Capacitor
    C. Inductor
    D. Diode
The correct answer is B.

### Question 5
#### What type of electrical component consists of two or more conductive surfaces separated by an insulator?

    A. Resistor
    B. Potentiometer
    C. Oscillator
    D. Capacitor
The correct answer is D.

### Question 6
#### What type of electrical component stores energy in a magnetic field?

    A. Resistor
    B. Capacitor
    C. Inductor
    D. Diode
The correct answer is C.

### Question 7
#### What electrical component is usually composed of a coil of wire?

    A. Switch
    B. Capacitor
    C. Diode
    D. Inductor
The correct answer is D.

### Question 8
#### What electrical component is used to connect or disconnect electrical circuits?

    A. Magnetron
    B. Switch
    C. Thermistor
    D. All of these choices are correct
The correct answer is B.

### Question 9
#### What electrical component is used to protect other circuit components from current overloads?

    A. Fuse
    B. Capacitor
    C. Inductor
    D. All of these choices are correct
The correct answer is A.

### Question 10
#### Which of the following battery types is rechargeable?

    A. Nickel-metal hydride
    B. Lithium-ion
    C. Lead-acid gel-cell
    D. All of these choices are correct
The correct answer is D.

### Question 11
#### Which of the following battery types is not rechargeable?

    A. Nickel-cadmium
    B. Carbon-zinc
    C. Lead-acid
    D. Lithium-ion
The correct answer is B.