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 limit current to prevent shocks
C	All these choices are correct
D	To remove power in case of overload

2. - T0B10

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

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

3. - T0C05

Why do exposure limits vary with frequency?

Select	Answer
A	Lower frequency RF fields have more energy than higher frequency fields
B	Higher frequency RF fields are transient in nature
C	The human body absorbs more RF energy at some frequencies than at others
D	Lower frequency RF fields do not penetrate the human body

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. - T1B12

Except for some specific restrictions, what is the maximum peak envelope power output for Technician class operators using frequencies above 30 MHz?

Select	Answer
A	500 watts
B	100 watts
C	50 watts
D	1500 watts

6. - T1C03

What types of international communications are an FCC-licensed amateur radio station permitted to make?

Select	Answer
A	Only communications incidental to contest exchanges; all other communications are prohibited
B	Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character
C	Communications incidental to conducting business or remarks of a personal nature
D	Any communications that would be permitted by an international broadcast station

7. - T1D04

Under what conditions is an amateur station authorized to transmit music using a phone emission?

Select	Answer
A	When incidental to an authorized retransmission of manned spacecraft communications
B	When the music produces no spurious emissions
C	When transmissions are limited to less than three minutes per hour
D	When the music is transmitted above 1280 MHz

8. - T1E09

Which of the following are required for remote control operation?

Select	Answer
A	The control operator must indirectly manipulate the controls
B	A control operator is required at all times
C	The control operator must be at the control point
D	All these choices are correct

9. - T1F06

Which of the following self-assigned indicators are acceptable when using a phone transmission?

Select	Answer
A	KL7CC slant W3
B	All these choices are correct
C	KL7CC slash W3
D	KL7CC stroke W3

10. - T2A03

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

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

11. - T2B03

Which of the following describes a linked repeater network?

Select	Answer
A	A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network
B	A system of repeaters linked by APRS
C	Multiple repeaters with the same control operator
D	A single repeater with more than one receiver

12. - T2C10

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

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

13. - T3A07

What weather condition might decrease range at microwave frequencies?

Select	Answer
A	Precipitation
B	Low barometric pressure
C	Colder temperatures
D	High winds

14. - T3B06

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

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

15. - T3C02

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

Select	Answer
A	HF antennas are generally smaller
B	Long-distance ionospheric propagation is far more common on HF
C	HF accommodates wider bandwidth signals
D	There is less atmospheric interference (static) on HF

16. - T4A12

What is an electronic keyer?

Select	Answer
A	A device that assists in manual sending of Morse code
B	A device for switching antennas from transmit to receive
C	An interlock to prevent unauthorized use of a radio
D	A device for voice activated switching from receive to transmit

17. - T4B12

What is the result of tuning an FM receiver above or below a signal’s frequency?

Select	Answer
A	Generation of a heterodyne tone
B	Change in audio pitch
C	Distortion of the signal’s audio
D	Sideband inversion

18. - T5A01

Electrical current is measured in which of the following units?

Select	Answer
A	Watts
B	Volts
C	Ohms
D	Amperes

19. - T5B02

Which is equal to 1,500,000 hertz?

Select	Answer
A	15 GHz
B	150 kHz
C	1500 kHz
D	1500 MHz

20. - T5C03

What describes the ability to store energy in a magnetic field?

Select	Answer
A	Inductance
B	Resistance
C	Admittance
D	Capacitance

21. - T5D01

What formula is used to calculate current in a circuit?

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

22. - T6A12

What type of switch is represented by component 3 in figure T-2?

Select	Answer
A	Double-pole single-throw
B	Single-pole single-throw
C	Single-pole double-throw
D	Double-pole double-throw

23. - T6B02

What electronic component allows current to flow in only one direction?

Select	Answer
A	Resistor
B	Diode
C	Driven element
D	Fuse

24. - T6C12

Which of the following is accurately represented in electrical schematics?

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

25. - T6D07

Which of the following is commonly used as a visual indicator?

Select	Answer
A	Bipolar transistor
B	FET
C	LED
D	Zener diode

26. - T7A03

Which of the following is used to convert a signal from one frequency to another?

Select	Answer
A	Amplifier
B	Phase splitter
C	Inverter
D	Mixer

27. - T7B07

Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?

Select	Answer
A	Installing a band-reject filter
B	Installing bypass capacitors on the microphone cable
C	Installing an RF preamplifier
D	Using double-shielded coaxial cable

28. - T7C07

What happens to power lost in a feed line?

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

29. - T7D03

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

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

30. - T8A04

Which type of modulation is commonly used for VHF and UHF voice repeaters?

Select	Answer
A	FM or PM
B	AM
C	PSK
D	SSB

31. - T8B09

What causes spin fading of satellite signals?

Select	Answer
A	Circular polarized noise interference radiated from the sun
B	Doppler shift of the received signal
C	Rotation of the satellite and its antennas
D	Interfering signals within the satellite uplink band

32. - T8C08

What is the Internet Radio Linking Project (IRLP)?

Select	Answer
A	A technique for measuring signal strength of an amateur transmitter via the internet
B	A system for providing access to websites via amateur radio
C	A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP)
D	A system for informing amateurs in real time of the frequency of active DX stations

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	A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction
C	An automatic position tracking mode for FM mobiles communicating through repeaters
D	An automatic computer logging technique for hands-off logging when communicating while operating a vehicle

34. - T9A08

What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

Select	Answer
A	112
B	50
C	12
D	19

35. - T9B05

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

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

Figure T-2