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

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

3. - T0C06

Which of the following is an acceptable method to determine whether your station complies with FCC RF exposure regulations?

Select	Answer
A	All these choices are correct
B	By measurement of field strength using calibrated equipment
C	By calculation based on computer modeling
D	By calculation based on FCC OET Bulletin 65

4. - T1A01

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

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

5. - T1B02

Which amateurs may contact the International Space Station (ISS) on VHF bands?

Select	Answer
A	Any amateur holding a Technician class or higher license
B	Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
C	Any amateur holding a General class or higher license
D	Any amateur holding a General class or higher license who has applied for and received approval from NASA

6. - T1C06

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

Select	Answer
A	From within any country that belongs to the International Telecommunication Union
B	From within any country that is a member of the United Nations
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. - T1D03

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

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

8. - T1E10

Which of the following is an example of remote control as defined in Part 97?

Select	Answer
A	Operating the station over the internet
B	Controlling a model aircraft, boat, or car by amateur radio
C	All these choices are correct
D	Repeater operation

9. - T1F03

When are you required to transmit your assigned call sign?

Select	Answer
A	At least once during each transmission
B	At least every 10 minutes during and at the end of a communication
C	At the beginning of each contact, and every 10 minutes thereafter
D	At least every 15 minutes during and at the end of a communication

10. - T2A02

What is the national calling frequency for FM simplex operations in the 2 meter band?

Select	Answer
A	146.520 MHz
B	432.100 MHz
C	446.000 MHz
D	145.000 MHz

11. - T2B12

What is the purpose of the color code used on DMR repeater systems?

Select	Answer
A	Identifies the codec used
B	Must match the repeater color code for access
C	Defines the minimum signal level required for access
D	Defines the frequency pair to use

12. - T2C02

Which of the following are typical duties of a Net Control Station?

Select	Answer
A	All these choices are correct
B	Ensure that all stations checking into the net are properly licensed for operation on the net frequency
C	Choose the regular net meeting time and frequency
D	Call the net to order and direct communications between stations checking in

13. - T3A12

What is the effect of fog and rain on signals in the 10 meter and 6 meter bands?

Select	Answer
A	There is little effect
B	Absorption
C	Range increase
D	Deflection

14. - T3B05

What is the relationship between wavelength and frequency?

Select	Answer
A	Wavelength and frequency increase as path length increases
B	Wavelength and frequency are unrelated
C	Wavelength gets longer as frequency increases
D	Wavelength gets shorter as frequency increases

15. - T3C08

What causes tropospheric ducting?

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

16. - T4A09

How can you determine the length of time that equipment can be powered from a battery?

Select	Answer
A	Multiply the watts per hour consumed by the equipment by the battery power rating
B	Divide the battery ampere-hour rating by the average current draw of the equipment
C	Multiply the square of the current rating of the battery by the input resistance of the equipment
D	Divide the watt-hour rating of the battery by the peak power consumption of the equipment

17. - T4B02

Which of the following can be used to enter a transceiver’s operating frequency?

Select	Answer
A	The keypad or VFO knob
B	All these choices are correct
C	The CTCSS or DTMF encoder
D	The Automatic Frequency Control

18. - T5A11

What type of current flow is opposed by resistance?

Select	Answer
A	Alternating current
B	Direct 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-thousandth of a volt
C	One thousand kilovolts
D	One one-millionth of a volt

20. - T5C08

What is the formula used to calculate electrical power (P) in a DC circuit?

Select	Answer
A	P = E / I
B	P = I  E
C	P = E – I
D	P = I + E

21. - T5D13

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

Select	Answer
A	Parallel
B	Branch
C	Resonant
D	Series

22. - T6A07

What electrical component is typically constructed as a coil of wire?

Select	Answer
A	Inductor
B	Switch
C	Diode
D	Capacitor

23. - T6B01

Which is true about forward voltage drop in a diode?

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

24. - T6C12

Which of the following is accurately represented in electrical schematics?

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

25. - T6D09

What is the name of a device that combines several semiconductors and other components into one package?

Select	Answer
A	Multi-pole relay
B	Transformer
C	Integrated circuit
D	Transducer

26. - T7A08

Which of the following describes combining speech with an RF carrier signal?

Select	Answer
A	Oscillation
B	Modulation
C	Low-pass filtering
D	Impedance matching

27. - T7B07

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

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

28. - T7C08

Which instrument can be used to determine SWR?

Select	Answer
A	Ohmmeter
B	Iambic pentameter
C	Voltmeter
D	Directional wattmeter

29. - T7D10

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

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

30. - T8A02

What type of modulation is commonly used for VHF packet radio transmissions?

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

31. - T8B02

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

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

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

33. - T8D01

Which of the following is a digital communications mode?

Select	Answer
A	Packet radio
B	All these choices are correct
C	IEEE 802.11
D	FT8

34. - T9A04

What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?

Select	Answer
A	It is mechanically fragile
B	All these choices are correct
C	It transmits only circularly polarized signals
D	It has low efficiency

35. - T9B01

What is a benefit of low SWR?

Select	Answer
A	Reduced signal loss
B	Reduced television interference
C	All these choices are correct
D	Less antenna wear