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. - T0A11

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

Select	Answer
A	Voltage transients from kickback diodes
B	Circulating currents in the dc filter
C	Charge stored in filter capacitors
D	Leakage flux in the power transformer

2. - T0B05

What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

Select	Answer
A	Provide a ground path for lightning strikes
B	Prevent loosening of the turnbuckle from vibration
C	Provide an ability to measure for proper tensioning
D	Secure the guy line if the turnbuckle breaks

3. - T0C05

Why do exposure limits vary with frequency?

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

4. - T1A10

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

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

5. - T1B10

Where may SSB phone be used in amateur bands above 50 MHz?

Select	Answer
A	Only on repeaters
B	Only in sub-bands allocated to General class or higher licensees
C	On any band if the power is limited to 25 watts
D	In at least some segment of all these bands

6. - T1C06

From which of the following locations may an FCC-licensed amateur station transmit?

Select	Answer
A	From within any country that is a member of the United Nations
B	From within any country that belongs to the International Telecommunication Union
C	From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
D	From any vessel or craft located in international waters and documented or registered in the United States

7. - T1D07

What types of amateur stations can automatically retransmit the signals of other amateur stations?

Select	Answer
A	Auxiliary, beacon, or Earth stations
B	Beacon, repeater, or space stations
C	Earth, repeater, or space stations
D	Repeater, auxiliary, or space stations

8. - T1E08

Which of the following is an example of automatic control?

Select	Answer
A	Using a computer or other device to send CW automatically
B	Controlling a station over the internet
C	Using a computer or other device to identify automatically
D	Repeater operation

9. - T1F08

What is the definition of third party communications?

Select	Answer
A	A message from a control operator to another amateur station control operator on behalf of another person
B	Temporary authorization for an unlicensed person to transmit on the amateur bands for technical experiments
C	Amateur radio communications where three stations are in communications with one another
D	Operation when the transmitting equipment is licensed to a person other than the control operator

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

12. - T2C04

What is RACES?

Select	Answer
A	An emergency organization combining amateur radio and citizens band operators and frequencies
B	A radio contest held in a short period, sometimes called a “sprint”
C	An FCC part 97 amateur radio service for civil defense communications during national emergencies
D	An international radio experimentation society

13. - T3A10

What effect does multi-path propagation have on data transmissions?

Select	Answer
A	Transmission rates must be increased by a factor equal to the number of separate paths observed
B	Error rates are likely to increase
C	Transmission rates must be decreased by a factor equal to the number of separate paths observed
D	No significant changes will occur if the signals are transmitted using FM

14. - T3B07

In addition to frequency, which of the following is used to identify amateur radio bands?

Select	Answer
A	Channel numbers
B	The approximate wavelength in meters
C	Traditional letter/number designators
D	All these choices are correct

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

17. - T4B09

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

Select	Answer
A	By entering the group’s identification code
B	By activating automatic identification
C	By retrieving the frequencies from transceiver memory
D	By enabling the group’s CTCSS tone

18. - T5A02

Electrical power is measured in which of the following units?

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

19. - T5B11

Which decibel value represents a power increase from 20 watts to 200 watts?

Select	Answer
A	18 dB
B	28 dB
C	10 dB
D	12 dB

20. - T5C03

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

Select	Answer
A	Capacitance
B	Admittance
C	Resistance
D	Inductance

21. - T5D13

In which type of circuit is DC current the same through all components?

Select	Answer
A	Resonant
B	Series
C	Branch
D	Parallel

22. - T6A10

Which of the following battery chemistries is rechargeable?

Select	Answer
A	Lithium-ion
B	All these choices are correct
C	Nickel-metal hydride
D	Lead-acid

23. - T6B01

Which is true about forward voltage drop in a diode?

Select	Answer
A	It has no impact on the voltage delivered to the load
B	It indicates that the diode is defective
C	It is proportional to peak inverse voltage
D	It is lower in some diode types than in others

24. - T6C01

What is the name of an electrical wiring diagram that uses standard component symbols?

Select	Answer
A	Flow chart
B	Schematic
C	Connector pinout
D	Bill of materials

25. - T6D05

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

Select	Answer
A	Filter
B	Regulator
C	Oscillator
D	Phase inverter

26. - T7A03

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

Select	Answer
A	Mixer
B	Amplifier
C	Inverter
D	Phase splitter

27. - T7B05

How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

Select	Answer
A	Block the amateur signal with a filter at the antenna input of the affected receiver
B	Block the interfering signal with a filter on the amateur transmitter
C	Switch the transmitter to a narrow-band mode
D	Switch the transmitter from FM to SSB

28. - T7C02

Which of the following is used to determine if an antenna is resonant at the desired operating frequency?

Select	Answer
A	An antenna analyzer
B	A Q meter
C	A frequency counter
D	A VTVM

29. - T7D10

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

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

30. - T8A08

What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

Select	Answer
A	6 kHz
B	3 kHz
C	15 kHz
D	1 kHz

31. - T8B12

Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?

Select	Answer
A	Check your signal strength report in the telemetry data
B	Listen for distortion on your downlink signal
C	Your signal strength on the downlink should be about the same as the beacon
D	All these choices are correct

32. - T8C03

What operating activity involves contacting as many stations as possible during a specified period?

Select	Answer
A	Simulated emergency exercises
B	Public service events
C	Contesting
D	Net operations

33. - T8D06

What does the abbreviation "PSK" mean?

Select	Answer
A	Pulse Shift Keying
B	Packet Short Keying
C	Phased Slide Keying
D	Phase Shift Keying

34. - T9A10

In which direction does a half-wave dipole antenna radiate the strongest signal?

Select	Answer
A	Broadside to the antenna
B	In the direction of the feed line
C	Equally in all directions
D	Off the ends of the antenna

35. - T9B02

What is the most common impedance of coaxial cables used in amateur radio?

Select	Answer
A	50 ohms
B	12 ohms
C	8 ohms
D	600 ohms