US Amateur Radio - Technician (Element 2, 2022-2026) Practice Test

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US Amateur Radio - Technician (Element 2, 2022-2026) Practice Test

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1. - T0A04

What is the purpose of a fuse in an electrical circuit?

Select	Answer
A	To prevent power supply ripple from damaging a component
B	To remove power in case of overload
C	To limit current to prevent shocks
D	All these choices are correct

2. - T0B10

Which of the following is true when installing grounding conductors used for lightning protection?

Select	Answer
A	Wires must be carefully routed with precise right-angle bends
B	Common grounds must be avoided
C	Use only non-insulated wire
D	Sharp bends must be avoided

3. - T0C11

What is the definition of duty cycle during the averaging time for RF exposure?

Select	Answer
A	The difference between the lowest power output and the highest power output of a transmitter
B	The percentage of time that a transmitter is transmitting
C	The percentage of time that a transmitter is not transmitting
D	The difference between the PEP and average power output of a transmitter

4. - T1A03

What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

Select	Answer
A	It is encouraged
B	It is required when transmitting emergency messages
C	It is required when in contact with foreign stations
D	All these choices are correct

5. - T1B11

What is the maximum peak envelope power output for Technician class operators in their HF band segments?

Select	Answer
A	200 watts
B	10 watts
C	100 watts
D	50 watts

6. - T1C07

Which of the following can result in revocation of the station license or suspension of the operator license?

Select	Answer
A	Failure to provide and maintain a correct email address with the FCC
B	Failure to have a copy of your license available at your station
C	Failure to inform the FCC of any changes in the amateur station following performance of an RF safety environmental evaluation
D	Failure to obtain FCC type acceptance prior to using a home-built transmitter

7. - T1D02

Under which of the following circumstances are one-way transmissions by an amateur station prohibited?

Select	Answer
A	In all circumstances
B	Telecommand or transmissions of telemetry
C	International Morse Code Practice
D	Broadcasting

8. - T1E11

Who does the FCC presume to be the control operator of an amateur station, unless documentation to the contrary is in the station records?

Select	Answer
A	The station licensee
B	The station custodian
C	The third party participant
D	The person operating the station equipment

9. - T1F04

What language may you use for identification when operating in a phone sub-band?

Select	Answer
A	Any language recognized by the United Nations
B	English
C	Any language recognized by the ITU
D	English, French, or Spanish

10. - T2A11

What term describes an amateur station that is transmitting and receiving on the same frequency?

Select	Answer
A	Diplex
B	Multiplex
C	Full duplex
D	Simplex

11. - T2B06

What type of signaling uses pairs of audio tones?

Select	Answer
A	DTMF
B	CTCSS
C	GPRS
D	D-STAR

12. - T2C06

What is the Amateur Radio Emergency Service (ARES)?

Select	Answer
A	A group of licensed amateurs who are members of the military and who voluntarily agreed to provide message handling services in the case of an emergency
B	A group of licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service
C	A training program that certifies amateur operators for membership in the Radio Amateur Civil Emergency Service
D	A training program that provides licensing courses for those interested in obtaining an amateur license to use during emergencies

13. - T3A01

Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet?

Select	Answer
A	Multipath propagation cancels or reinforces signals
B	VHF ionospheric propagation is very sensitive to path length
C	The signal path encounters different concentrations of water vapor
D	All these choices are correct

14. - T3B06

What is the formula for converting frequency to approximate wavelength in meters?

Select	Answer
A	Wavelength in meters equals 300 divided by frequency in megahertz
B	Wavelength in meters equals frequency in megahertz divided by 300
C	Wavelength in meters equals frequency in hertz multiplied by 300
D	Wavelength in meters equals frequency in hertz divided by 300

15. - T3C08

What causes tropospheric ducting?

Select	Answer
A	Updrafts from hurricanes and tornadoes
B	Discharges of lightning during electrical storms
C	Temperature inversions in the atmosphere
D	Sunspots and solar flares

16. - T4A03

Why are short, heavy-gauge wires used for a transceiver’s DC power connection?

Select	Answer
A	To minimize voltage drop when transmitting
B	To avoid RF interference
C	To provide a good counterpoise for the antenna
D	All these choices are correct

17. - T4B09

How is a specific group of stations selected on a digital voice transceiver?

Select	Answer
A	By activating automatic identification
B	By entering the group’s identification code
C	By enabling the group’s CTCSS tone
D	By retrieving the frequencies from transceiver memory

18. - T5A11

What type of current flow is opposed by resistance?

Select	Answer
A	Alternating current
B	All these choices are correct
C	RF current
D	Direct current

19. - T5B11

Which decibel value represents a power increase from 20 watts to 200 watts?

Select	Answer
A	10 dB
B	28 dB
C	12 dB
D	18 dB

20. - T5C12

What is impedance?

Select	Answer
A	The opposition to AC current flow
B	The inverse of resistance
C	The Q or Quality Factor of a component
D	The power handling capability of a component

21. - T5D09

What is the current through a 24-ohm resistor connected across 240 volts?

Select	Answer
A	216 amperes
B	10 amperes
C	24,000 amperes
D	0.1 amperes

22. - T6A04

What electrical component stores energy in an electric field?

Select	Answer
A	Varistor
B	Inductor
C	Capacitor
D	Diode

23. - T6B12

What are the names of the electrodes of a bipolar junction transistor?

Select	Answer
A	Signal, bias, power
B	Pole one, pole two, output
C	Emitter, base, collector
D	Input, output, supply

24. - T6C03

What is component 2 in figure T-1?

Select	Answer
A	Connector
B	Indicator lamp
C	Transistor
D	Resistor

25. - T6D02

What is a relay?

Select	Answer
A	An electrically-controlled switch
B	A pass transistor
C	A current controlled amplifier
D	An inverting amplifier

26. - T7A05

What is the name of a circuit that generates a signal at a specific frequency?

Select	Answer
A	Low-pass filter
B	Reactance modulator
C	Oscillator
D	Phase modulator

27. - T7B10

What might be a problem if you receive a report that your audio signal through an FM repeater is distorted or unintelligible?

Select	Answer
A	You are in a bad location
B	Your transmitter is slightly off frequency
C	Your batteries are running low
D	All these choices are correct

28. - T7C09

Which of the following causes failure of coaxial cables?

Select	Answer
A	Rapid fluctuation in transmitter output power
B	Solder flux contamination
C	Operation at 100% duty cycle for an extended period
D	Moisture contamination

29. - T7D11

Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

Select	Answer
A	Ensure that the applied voltages are correct
B	Ensure that the circuit is operating at the correct frequency
C	Ensure that the circuit is grounded
D	Ensure that the circuit is not powered

30. - T8A10

What is the approximate bandwidth of AM fast-scan TV transmissions?

Select	Answer
A	About 1 MHz
B	More than 10 MHz
C	About 3 MHz
D	About 6 MHz

31. - T8B12

Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?

Select	Answer
A	Your signal strength on the downlink should be about the same as the beacon
B	Check your signal strength report in the telemetry data
C	Listen for distortion on your downlink signal
D	All these choices are correct

32. - T8C10

What is required before using the EchoLink system?

Select	Answer
A	Complete the required EchoLink training
B	All these choices are correct
C	Purchase a license to use the EchoLink software
D	Register your call sign and provide proof of license

33. - T8D12

Which of the following best describes an amateur radio mesh network?

Select	Answer
A	An amateur-radio based data network using commercial Wi-Fi equipment with modified firmware
B	A wide-bandwidth digital voice mode employing DMR protocols
C	An internet linking protocol used to network repeaters
D	A satellite communications network using modified commercial satellite TV hardware

34. - T9A10

In which direction does a half-wave dipole antenna radiate the strongest signal?

Select	Answer
A	Broadside to the antenna
B	Equally in all directions
C	Off the ends of the antenna
D	In the direction of the feed line

35. - T9B12

What is standing wave ratio (SWR)?

Select	Answer
A	A measure of how well a load is matched to a transmission line
B	An indication of the quality of your station’s ground connection
C	The ratio of amplifier power output to input
D	The transmitter efficiency ratio

Figure T-1