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

2. - T0B09

Why should you avoid attaching an antenna to a utility pole?

Select	Answer
A	The antenna could contact high-voltage power lines
B	All these choices are correct
C	The antenna will not work properly because of induced voltages
D	The 60 Hz radiations from the feed line may increase the SWR

3. - T0C11

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

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

4. - T1A01

Which of the following is part of the Basis and Purpose of the Amateur Radio Service?

Select	Answer
A	Providing personal radio communications for as many citizens as possible
B	Advancing skills in the technical and communication phases of the radio art
C	Providing communications for international non-profit organizations
D	All these choices are correct

5. - T1B06

On which HF bands does a Technician class operator have phone privileges?

Select	Answer
A	80 meter, 40 meter, 15 meter, and 10 meter bands
B	30 meter band only
C	None
D	10 meter band only

6. - T1C04

What may happen if the FCC is unable to reach you by email?

Select	Answer
A	Revocation of the station license or suspension of the operator license
B	Fine and suspension of operator license
C	Revocation of access to the license record in the FCC system
D	Nothing; there is no such requirement

7. - T1D01

With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications?

Select	Answer
A	Any country whose administration has notified the American Radio Relay League (ARRL) that it objects to such communications
B	Any country banned from such communications by the International Amateur Radio Union (IARU)
C	Any country whose administration has notified the International Telecommunication Union (ITU) that it objects to such communications
D	Any country banned from making such communications by the American Radio Relay League (ARRL)

8. - T1E03

Who must designate the station control operator?

Select	Answer
A	The FCC
B	The frequency coordinator
C	Any licensed operator
D	The station licensee

9. - T1F09

What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels?

Select	Answer
A	Earth station
B	Message forwarding station
C	Repeater station
D	Beacon station

10. - T2A10

What is a band plan, beyond the privileges established by the FCC?

Select	Answer
A	A voluntary guideline for using different modes or activities within an amateur band
B	A list of operating schedules
C	A list of available net frequencies
D	A plan devised by a club to indicate frequency band usage

11. - T2B11

Which Q signal indicates that you are changing frequency?

Select	Answer
A	QRU
B	QSL
C	QRZ
D	QSY

12. - T2C10

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

Select	Answer
A	The email address of the originating station
B	Information needed to track the message
C	The telephone number of the addressee
D	The address of the intended recipient

13. - T3A05

When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path?

Select	Answer
A	Try the long path
B	Increase the antenna SWR
C	Change from vertical to horizontal polarization
D	Try to find a path that reflects signals to the repeater

14. - T3B01

What is the relationship between the electric and magnetic fields of an electromagnetic wave?

Select	Answer
A	They revolve in opposite directions
B	They travel at different speeds
C	They are in parallel
D	They are at right angles

15. - T3C08

What causes tropospheric ducting?

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

16. - T4A01

Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

Select	Answer
A	13.8 volts at 12 amperes
B	24.0 volts at 12 amperes
C	13.8 volts at 4 amperes
D	24.0 volts at 4 amperes

17. - T4B07

What does a DMR “code plug” contain?

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

18. - T5A02

Electrical power is measured in which of the following units?

Select	Answer
A	Volts
B	Watt-hours
C	Amperes
D	Watts

19. - T5B08

Which is equal to 1,000,000 picofarads?

Select	Answer
A	1 microfarad
B	1000 microfarads
C	1,000,000,000 microfarads
D	0.001 microfarads

20. - T5C10

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

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

21. - T5D04

What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

Select	Answer
A	93 ohms
B	270 ohms
C	30 ohms
D	3 ohms

22. - T6A06

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

Select	Answer
A	Capacitor
B	Diode
C	Varistor
D	Inductor

23. - T6B09

What are the names for the electrodes of a diode?

Select	Answer
A	Anode and cathode
B	Gate and base
C	Source and drain
D	Plus and minus

24. - T6C10

What is component 3 in figure T-3?

Select	Answer
A	Connector
B	Meter
C	Variable capacitor
D	Variable inductor

25. - T6D03

Which of the following is a reason to use shielded wire?

Select	Answer
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

26. - T7A04

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

Select	Answer
A	Harmonic distortion
B	Discrimination ratio
C	Sensitivity
D	Selectivity

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

28. - T7C10

Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

Select	Answer
A	Ultraviolet and RF signals can mix, causing interference
B	Ultraviolet resistant jackets prevent harmonic radiation
C	Ultraviolet light can increase losses in the cable’s jacket
D	Ultraviolet light can damage the jacket and allow water to enter the cable

29. - T7D03

When configured to measure current, how is a multimeter connected to a component?

Select	Answer
A	In parallel
B	In phase
C	In series
D	In quadrature

30. - T8A07

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

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

31. - T8B02

What is the impact of using excessive effective radiated power on a satellite uplink?

Select	Answer
A	Overloading the satellite batteries
B	Possibility of commanding the satellite to an improper mode
C	Possibility of rebooting the satellite control computer
D	Blocking access by other users

32. - T8C04

Which of the following is good procedure when contacting another station in a contest?

Select	Answer
A	Sign only the last two letters of your call if there are many other stations calling
B	Send only the minimum information needed for proper identification and the contest exchange
C	Contact the station twice to be sure that you are in his log
D	All these choices are correct

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 net that meets at a specified time
C	A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
D	A group of operators sharing common interests

34. - T9A02

Which of the following describes a type of antenna loading?

Select	Answer
A	Installing a spring in the base of a mobile vertical antenna to make it more flexible
B	Strengthening the radiating elements of a beam antenna to better resist wind damage
C	Inserting a resistor in the radiating portion of the antenna to make it resonant
D	Electrically lengthening by inserting inductors in radiating elements

35. - T9B05

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

Select	Answer
A	The loss decreases
B	The characteristic impedance increases
C	The characteristic impedance decreases
D	The loss increases

Figure T-3