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

2. - T0B03

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

Select	Answer
A	Never
B	When the work being done is not more than 20 feet above the ground
C	When no electrical work is being performed
D	When no mechanical work is being performed

3. - T0C09

How can you make sure your station stays in compliance with RF safety regulations?

Select	Answer
A	All these choices are correct
B	By making sure your antennas have low SWR
C	By re-evaluating the station whenever an item in the transmitter or antenna system is changed
D	By informing the FCC of any changes made in your station

4. - T1A04

How many operator/primary station license grants may be held by any one person?

Select	Answer
A	No more than two
B	One for each permanent station location from which the person plans to operate
C	One for each band on which the person plans to operate
D	One

5. - T1B07

Which of the following VHF/UHF band segments are limited to CW only?

Select	Answer
A	219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz
B	All these choices are correct
C	902.0 MHz to 902.1 MHz
D	50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz

6. - T1C09

What is the grace period for renewal if an amateur license expires?

Select	Answer
A	Ten years
B	Five years
C	Two years
D	Three years

7. - T1D03

When is it permissible to transmit messages encoded to obscure their meaning?

Select	Answer
A	Never
B	Only when transmitting certain approved digital codes
C	Only when transmitting control commands to space stations or radio control craft
D	Only during contests

8. - T1E04

What determines the transmitting frequency privileges of an amateur station?

Select	Answer
A	The frequency authorized by the frequency coordinator
B	The frequencies printed on the license grant
C	The class of operator license held by the control operator
D	The highest class of operator license held by anyone on the premises

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, French, or Spanish
C	Any language recognized by the ITU
D	English

10. - T2A03

What is a common repeater frequency offset in the 70 cm band?

Select	Answer
A	Plus or minus 5 MHz
B	Plus or minus 1 MHz
C	Plus or minus 600 kHz
D	Plus or minus 500 kHz

11. - T2B09

Why are simplex channels designated in the VHF/UHF band plans?

Select	Answer
A	For working DX only
B	So stations within range of each other can communicate without tying up a repeater
C	For contest operation
D	So stations with simple transmitters can access the repeater without automated offset

12. - T2C06

What is the Amateur Radio Emergency Service (ARES)?

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

13. - T3A09

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

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

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 are in parallel
C	They are at right angles
D	They travel at different speeds

15. - T3C11

Why is the radio horizon for VHF and UHF signals more distant than the visual horizon?

Select	Answer
A	Radio waves are blocked by dust particles
B	Radio waves are not blocked by dust particles
C	The atmosphere refracts radio waves slightly
D	Radio signals move somewhat faster than the speed of light

16. - T4A04

How are the transceiver audio input and output connected in a station configured to operate using FT8?

Select	Answer
A	To the audio input and output of a computer running WSJT-X software
B	To a computer running a terminal program and connected to a terminal node controller unit
C	To an FT8 conversion unit, a keyboard, and a computer monitor
D	To a computer connected to the FT8converter.com website

17. - T4B07

What does a DMR “code plug” contain?

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

18. - T5A11

What type of current flow is opposed by resistance?

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

19. - T5B04

Which is equal to one microvolt?

Select	Answer
A	One million volts
B	One one-millionth of a volt
C	One one-thousandth of a volt
D	One thousand kilovolts

20. - T5C09

How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

Select	Answer
A	0.7 watts
B	138 watts
C	23.8 watts
D	3.8 watts

21. - T5D14

In which type of circuit is voltage the same across all components?

Select	Answer
A	Parallel
B	Resonant
C	Branch
D	Series

22. - T6A09

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

Select	Answer
A	Fuse
B	Varactor
C	All these choices are correct
D	Thyratron

23. - T6B05

What type of transistor has a gate, drain, and source?

Select	Answer
A	Field-effect
B	Tesla-effect
C	Varistor
D	Bipolar junction

24. - T6C12

Which of the following is accurately represented in electrical schematics?

Select	Answer
A	Wire lengths
B	Component connections
C	Physical appearance of components
D	All these choices are correct

25. - T6D10

What is the function of component 2 in figure T-1?

Select	Answer
A	Give off light when current flows through it
B	Control the flow of current
C	Supply electrical energy
D	Convert electrical energy into radio waves

26. - T7A04

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

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

27. - T7B06

Which of the following actions should you take if a neighbor tells you that your station’s transmissions are interfering with their radio or TV reception?

Select	Answer
A	Immediately turn off your transmitter and contact the nearest FCC office for assistance
B	Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
C	Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated
D	All these choices are correct

28. - T7C07

What happens to power lost in a feed line?

Select	Answer
A	It increases the SWR
B	It is converted into heat
C	It distorts the signal
D	It is radiated as harmonics

29. - T7D01

Which instrument would you use to measure electric potential?

Select	Answer
A	An ammeter
B	An ohmmeter
C	A wavemeter
D	A voltmeter

30. - T8A09

What is the approximate bandwidth of a VHF repeater FM voice signal?

Select	Answer
A	Between 50 and 125 kHz
B	About 150 kHz
C	Less than 500 Hz
D	Between 10 and 15 kHz

31. - T8B08

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

Select	Answer
A	The satellite frequencies are usually variable
B	The satellite uplink is in the 70 centimeter band and the downlink is in the 2 meter band
C	The satellite operates using ultraviolet frequencies
D	The satellite uplink is in the 15 meter band and the downlink is in the 10 meter band

32. - T8C02

Which of these items would be useful for a hidden transmitter hunt?

Select	Answer
A	A calibrated noise bridge
B	Calibrated SWR meter
C	All these choices are correct
D	A directional antenna

33. - T8D07

Which of the following describes DMR?

Select	Answer
A	A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel
B	An automatic computer logging technique for hands-off logging when communicating while operating a vehicle
C	A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction
D	An automatic position tracking mode for FM mobiles communicating through repeaters

34. - T9A05

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

Select	Answer
A	Shortening it
B	Inserting coils in series with radiating wires
C	Lengthening it
D	Adding capacitive loading to the ends of the radiating wires

35. - T9B08

Which of the following is a source of loss in coaxial feed line?

Select	Answer
A	High SWR
B	Water intrusion into coaxial connectors
C	Multiple connectors in the line
D	All these choices are correct

Figure T-1