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. - T0A05

Why should a 5-ampere fuse never be replaced with a 20-ampere fuse?

Select	Answer
A	The power supply ripple would greatly increase
B	The larger fuse would be likely to blow because it is rated for higher current
C	All these choices are correct
D	Excessive current could cause a fire

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. - T0C10

Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

Select	Answer
A	It takes into account the thermal effects of the final amplifier
B	It affects the average exposure to radiation
C	It takes into account the antenna feed line loss
D	It affects the peak exposure to radiation

4. - T1A10

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

Select	Answer
A	An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
B	A radio service using amateur stations for emergency management or civil defense communications
C	All these choices are correct
D	A radio service using amateur frequencies for emergency management or civil defense communications

5. - T1B01

Which of the following frequency ranges are available for phone operation by Technician licensees?

Select	Answer
A	28.100 MHz to 28.300 MHz
B	28.050 MHz to 28.150 MHz
C	28.300 MHz to 28.500 MHz
D	28.500 MHz to 28.600 MHz

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

7. - T1D06

What, if any, are the restrictions concerning transmission of language that may be considered indecent or obscene?

Select	Answer
A	Any such language is prohibited
B	There is no such prohibition
C	The ITU maintains a list of words that are not permitted to be used on amateur frequencies
D	The FCC maintains a list of words that are not permitted to be used on amateur frequencies

8. - T1E05

What is an amateur station’s control point?

Select	Answer
A	The location of the station’s transmitting antenna
B	The location of the station’s transmitting apparatus
C	The mailing address of the station licensee
D	The location at which the control operator function is performed

9. - T1F11

Which of the following is a requirement for the issuance of a club station license grant?

Select	Answer
A	The club must be registered with the American Radio Relay League
B	The club must have at least four members
C	The trustee must have an Amateur Extra Class operator license grant
D	All these choices are correct

10. - T2A11

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

Select	Answer
A	Full duplex
B	Diplex
C	Multiplex
D	Simplex

11. - T2B11

Which Q signal indicates that you are changing frequency?

Select	Answer
A	QSL
B	QSY
C	QRZ
D	QRU

12. - T2C03

What technique is used to ensure that voice messages containing unusual words are received correctly?

Select	Answer
A	Speak very loudly into the microphone
B	All these choices are correct
C	Send the words by voice and Morse code
D	Spell the words using a standard phonetic alphabet

13. - T3A09

Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized?

Select	Answer
A	FM voice is unusable
B	Digital modes are unusable
C	Both the transmitting and receiving antennas must be of the same polarization
D	Either vertically or horizontally polarized antennas may be used for transmission or reception

14. - T3B02

What property of a radio wave defines its polarization?

Select	Answer
A	The ratio of the energy in the magnetic field to the energy in the electric field
B	The ratio of the velocity to the wavelength
C	The orientation of the magnetic field
D	The orientation of the electric field

15. - T3C05

Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

Select	Answer
A	Faraday rotation
B	Quantum tunneling
C	Doppler shift
D	Knife-edge diffraction

16. - T4A08

Which of the following conductors is preferred for bonding at RF?

Select	Answer
A	Flat copper strap
B	Twisted-pair cable
C	Steel wire
D	Copper braid removed from coaxial cable

17. - T4B07

What does a DMR “code plug” contain?

Select	Answer
A	Access information for repeaters and talkgroups
B	The DMR software version
C	Your call sign in CW for automatic identification
D	The codec for digitizing audio

18. - T5A09

Which of the following describes alternating current?

Select	Answer
A	Current that alternates between positive and negative directions
B	Current that alternates between a positive direction and zero
C	All these answers are correct
D	Current that alternates between a negative direction and zero

19. - T5B09

Which decibel value most closely represents a power increase from 5 watts to 10 watts?

Select	Answer
A	2 dB
B	5 dB
C	3 dB
D	10 dB

20. - T5C10

How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

Select	Answer
A	0.208 watts
B	14.5 watts
C	4.8 watts
D	30 watts

21. - T5D02

What formula is used to calculate voltage in a circuit?

Select	Answer
A	E = I x R
B	E = I + R
C	E = I - R
D	E = I / R

22. - T6A02

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

Select	Answer
A	Potentiometer
B	Fixed resistor
C	Power resistor
D	Transformer

23. - T6B10

Which of the following can provide power gain?

Select	Answer
A	Transistor
B	Transformer
C	Reactor
D	Resistor

24. - T6C02

What is component 1 in figure T-1?

Select	Answer
A	Battery
B	Connector
C	Transistor
D	Resistor

25. - T6D05

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

Select	Answer
A	Filter
B	Phase inverter
C	Regulator
D	Oscillator

26. - T7A10

What device increases the transmitted output power from a transceiver?

Select	Answer
A	A voltage divider
B	An RF power amplifier
C	All these choices are correct
D	An impedance network

27. - T7B08

What should you do if something in a neighbor’s home is causing harmful interference to your amateur station?

Select	Answer
A	Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference
B	Make sure your station meets the standards of good amateur practice
C	All these choices are correct
D	Work with your neighbor to identify the offending device

28. - T7C05

Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level?

Select	Answer
A	To lower the SWR on the transmission line
B	Because power supplies cannot supply enough current at high SWR
C	To protect the output amplifier transistors
D	To comply with FCC rules on spectral purity

29. - T7D10

What reading indicates that an ohmmeter is connected across a large, discharged capacitor?

Select	Answer
A	Decreasing resistance with time
B	Steady full-scale reading
C	Alternating between open and short circuit
D	Increasing resistance with time

30. - T8A07

What is a characteristic of single sideband (SSB) compared to FM?

Select	Answer
A	SSB signals are less susceptible to interference
B	All these choices are correct
C	SSB signals have narrower bandwidth
D	SSB signals are easier to tune in correctly

31. - T8B07

What is Doppler shift in reference to satellite communications?

Select	Answer
A	An observed change in signal frequency caused by relative motion between the satellite and Earth station
B	A special digital communications mode for some satellites
C	A mode where the satellite receives signals on one band and transmits on another
D	A change in the satellite orbit

32. - T8C01

Which of the following methods is used to locate sources of noise interference or jamming?

Select	Answer
A	Radio direction finding
B	Doppler radar
C	Phase locking
D	Echolocation

33. - T8D02

What is a “talkgroup” on a DMR repeater?

Select	Answer
A	A way for groups of users to share a channel at different times without hearing other users on the channel
B	A group of operators sharing common interests
C	A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
D	A net that meets at a specified time

34. - T9A12

What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?

Select	Answer
A	It radiates at a very high angle
B	It eliminates distortion caused by reflected signals
C	It has 10 times the power gain of a 1/4 wavelength whip
D	It has more gain than a 1/4-wavelength antenna

35. - T9B12

What is standing wave ratio (SWR)?

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

Figure T-1