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

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1. - T0A11

What hazard exists in a power supply immediately after turning it off?

SelectAnswer
ACirculating currents in the dc filter
BVoltage transients from kickback diodes
CCharge stored in filter capacitors
DLeakage flux in the power transformer

2. - T0B03

Under what circumstances is it safe to climb a tower without a helper or observer?

SelectAnswer
AWhen no mechanical work is being performed
BWhen no electrical work is being performed
CWhen the work being done is not more than 20 feet above the ground
DNever

3. - T0C11

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

SelectAnswer
AThe difference between the lowest power output and the highest power output of a transmitter
BThe percentage of time that a transmitter is transmitting
CThe difference between the PEP and average power output of a transmitter
DThe percentage of time that a transmitter is not transmitting

4. - T1A10

What is the Radio Amateur Civil Emergency Service (RACES)?

SelectAnswer
AA radio service using amateur frequencies for emergency management or civil defense communications
BAn emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
CAll these choices are correct
DA radio service using amateur stations for emergency management or civil defense communications

5. - T1B08

How are US amateurs restricted in segments of bands where the Amateur Radio Service is secondary?

SelectAnswer
AU.S. amateurs may find non-amateur stations in those segments, and must avoid interfering with them
BInternational communications are not permitted in those segments
CU.S. amateurs must give foreign amateur stations priority in those segments
DDigital transmissions are not permitted in those segments

6. - T1C01

For which license classes are new licenses currently available from the FCC?

SelectAnswer
ATechnician, Technician Plus, General, Amateur Extra
BTechnician, General, Amateur Extra
CNovice, Technician Plus, General, Advanced
DNovice, Technician, General, Amateur Extra

7. - T1D10

How does the FCC define broadcasting for the Amateur Radio Service?

SelectAnswer
AAny transmission made by the licensed station
BTwo-way transmissions by amateur stations
CTransmission of messages directed only to amateur operators
DTransmissions intended for reception by the general public

8. - T1E03

Who must designate the station control operator?

SelectAnswer
AThe FCC
BAny licensed operator
CThe station licensee
DThe frequency coordinator

9. - T1F10

Who is accountable if a repeater inadvertently retransmits communications that violate the FCC rules?

SelectAnswer
AThe control operator of the repeater
BThe owner of the repeater
CThe control operator of the originating station
DBoth the originating station and the repeater owner

10. - T2A09

Which of the following indicates that a station is listening on a repeater and looking for a contact?

SelectAnswer
A“QSY” followed by your call sign
B“CQ CQ” followed by the repeater’s call sign
CThe station’s call sign followed by the word “monitoring”
DThe repeater call sign followed by the station’s call sign

11. - T2B06

What type of signaling uses pairs of audio tones?

SelectAnswer
ACTCSS
BD-STAR
CDTMF
DGPRS

12. - T2C10

What information is contained in the preamble of a formal traffic message?

SelectAnswer
AInformation needed to track the message
BThe telephone number of the addressee
CThe email address of the originating station
DThe address of the intended recipient

13. - T3A08

What is a likely cause of irregular fading of signals propagated by the ionosphere?

SelectAnswer
AFrequency shift due to Faraday rotation
BRandom combining of signals arriving via different paths
CIntermodulation distortion
DInterference from thunderstorms

14. - T3B03

What are the two components of a radio wave?

SelectAnswer
AIonizing and non-ionizing radiation
BImpedance and reactance
CVoltage and current
DElectric and magnetic fields

15. - T3C02

What is a characteristic of HF communication compared with communications on VHF and higher frequencies?

SelectAnswer
ALong-distance ionospheric propagation is far more common on HF
BHF accommodates wider bandwidth signals
CHF antennas are generally smaller
DThere is less atmospheric interference (static) on HF

16. - T4A11

Where should the negative power return of a mobile transceiver be connected in a vehicle?

SelectAnswer
AThrough the transceiver’s mounting bracket
BTo any metal part of the vehicle
CAt the antenna mount
DAt the 12 volt battery chassis ground

17. - T4B09

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

SelectAnswer
ABy enabling the group’s CTCSS tone
BBy activating automatic identification
CBy retrieving the frequencies from transceiver memory
DBy entering the group’s identification code

18. - T5A11

What type of current flow is opposed by resistance?

SelectAnswer
AAll these choices are correct
BRF current
CDirect current
DAlternating current

19. - T5B08

Which is equal to 1,000,000 picofarads?

SelectAnswer
A0.001 microfarads
B1000 microfarads
C1 microfarad
D1,000,000,000 microfarads

20. - T5C13

What is the abbreviation for kilohertz?

SelectAnswer
AkHz
Bkhz
CkhZ
DKHZ

21. - T5D05

What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

SelectAnswer
A13.5 ohms
B8 ohms
C0.125 ohms
D18 ohms

22. - T6A05

What type of electrical component consists of conductive surfaces separated by an insulator?

SelectAnswer
ACapacitor
BPotentiometer
COscillator
DResistor

23. - T6B01

Which is true about forward voltage drop in a diode?

SelectAnswer
AIt is proportional to peak inverse voltage
BIt is lower in some diode types than in others
CIt has no impact on the voltage delivered to the load
DIt indicates that the diode is defective

24. - T6C08

What is component 9 in figure T-2?

SelectAnswer
AVariable resistor
BVariable capacitor
CVariable inductor
DVariable transformer

25. - T6D08

Which of the following is combined with an inductor to make a resonant circuit?

SelectAnswer
AZener diode
BResistor
CCapacitor
DPotentiometer

26. - T7A05

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

SelectAnswer
APhase modulator
BLow-pass filter
CReactance modulator
DOscillator

27. - T7B03

Which of the following can cause radio frequency interference?

SelectAnswer
AAll these choices are correct
BSpurious emissions
CHarmonics
DFundamental overload

28. - T7C04

What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

SelectAnswer
A50:50
B1:1
CZero
DFull Scale

29. - T7D04

Which instrument is used to measure electric current?

SelectAnswer
AAn electrometer
BA voltmeter
CAn ammeter
DAn ohmmeter

30. - T8A12

Which of the following is a disadvantage of FM compared with single sideband?

SelectAnswer
AFM signals are harder to tune
BVoice quality is poorer
COnly one signal can be received at a time
DAll these choices are correct

31. - T8B08

What is meant by the statement that a satellite is operating in U/V mode?

SelectAnswer
AThe satellite frequencies are usually variable
BThe satellite uplink is in the 15 meter band and the downlink is in the 10 meter band
CThe satellite operates using ultraviolet frequencies
DThe satellite uplink is in the 70 centimeter band and the downlink is in the 2 meter band

32. - T8C11

What is an amateur radio station that connects other amateur stations to the internet?

SelectAnswer
AA digipeater
BA beacon
CA gateway
DA repeater

33. - T8D08

Which of the following is included in packet radio transmissions?

SelectAnswer
AA check sum that permits error detection
BA header that contains the call sign of the station to which the information is being sent
CAll these choices are correct
DAutomatic repeat request in case of error

34. - T9A05

Which of the following increases the resonant frequency of a dipole antenna?

SelectAnswer
AAdding capacitive loading to the ends of the radiating wires
BShortening it
CLengthening it
DInserting coils in series with radiating wires

35. - T9B05

What happens as the frequency of a signal in coaxial cable is increased?

SelectAnswer
AThe characteristic impedance decreases
BThe characteristic impedance increases
CThe loss increases
DThe loss decreases

Figure T-2