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. - T0A10

What hazard is caused by charging or discharging a battery too quickly?

Select	Answer
A	Inverse memory effect
B	Excess output ripple
C	Half-wave rectification
D	Overheating or out-gassing

2. - T0B04

Which of the following is an important safety precaution to observe when putting up an antenna tower?

Select	Answer
A	Insulate the base of the tower to avoid lightning strikes
B	All these choices are correct
C	Look for and stay clear of any overhead electrical wires
D	Wear a ground strap connected to your wrist at all times

3. - T0C10

Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

Select	Answer
A	It affects the average exposure to radiation
B	It takes into account the thermal effects of the final amplifier
C	It takes into account the antenna feed line loss
D	It affects the peak exposure to radiation

4. - T1A11

When is willful interference to other amateur radio stations permitted?

Select	Answer
A	When making short test transmissions
B	At no time
C	At any time, stations in the Amateur Radio Service are not protected from willful interference
D	To stop another amateur station that is breaking the FCC rules

5. - T1B04

Which amateur band includes 146.52 MHz?

Select	Answer
A	6 meters
B	70 centimeters
C	2 meters
D	20 meters

6. - T1C03

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

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

7. - T1D06

What, if any, are the restrictions concerning transmission of language that may be considered indecent or obscene?

Select	Answer
A	The ITU maintains a list of words that are not permitted to be used on amateur frequencies
B	There is no such prohibition
C	The FCC maintains a list of words that are not permitted to be used on amateur frequencies
D	Any such language is prohibited

8. - T1E03

Who must designate the station control operator?

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

9. - T1F11

Which of the following is a requirement for the issuance of a club station license grant?

Select	Answer
A	The club must have at least four members
B	The club must be registered with the American Radio Relay League
C	All these choices are correct
D	The trustee must have an Amateur Extra Class operator license grant

10. - T2A11

What term describes an amateur station that is transmitting and receiving on the same frequency?

Select	Answer
A	Diplex
B	Simplex
C	Full duplex
D	Multiplex

11. - T2B10

Which Q signal indicates that you are receiving interference from other stations?

Select	Answer
A	QRN
B	QRM
C	QTH
D	QSB

12. - T2C09

Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?

Select	Answer
A	Yes, but only in situations involving the immediate safety of human life or protection of property
B	Yes, but only when part of a RACES emergency plan
C	No
D	Yes, but only when part of a FEMA emergency plan

13. - T3A10

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

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

14. - T3B11

What is the approximate velocity of a radio wave in free space?

Select	Answer
A	150,000 meters per second
B	150,000 miles per hour
C	300,000,000 meters per second
D	300,000,000 miles per hour

15. - T3C08

What causes tropospheric ducting?

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

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 4 amperes
B	13.8 volts at 12 amperes
C	24.0 volts at 4 amperes
D	24.0 volts at 12 amperes

17. - T4B09

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

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

18. - T5A07

Why are metals generally good conductors of electricity?

Select	Answer
A	All these choices are correct
B	They have many free protons
C	They have many free electrons
D	They have relatively high density

19. - T5B09

Which decibel value most closely represents a power increase from 5 watts to 10 watts?

Select	Answer
A	2 dB
B	5 dB
C	3 dB
D	10 dB

20. - T5C06

What does the abbreviation “RF” mean?

Select	Answer
A	Reflective force in antenna transmission lines
B	The resonant frequency of a tuned circuit
C	Radio frequency signals of all types
D	The real frequency transmitted as opposed to the apparent frequency

21. - T5D12

What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

Select	Answer
A	20 volts
B	12 volts
C	8 volts
D	0.2 volts

22. - T6A01

What electrical component opposes the flow of current in a DC circuit?

Select	Answer
A	Inverter
B	Inductor
C	Resistor
D	Transformer

23. - T6B01

Which is true about forward voltage drop in a diode?

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

24. - T6C12

Which of the following is accurately represented in electrical schematics?

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

25. - T6D08

Which of the following is combined with an inductor to make a resonant circuit?

Select	Answer
A	Zener diode
B	Resistor
C	Potentiometer
D	Capacitor

26. - T7A09

What is the function of the SSB/CW-FM switch on a VHF power amplifier?

Select	Answer
A	Change the mode of the transmitted signal
B	Change the frequency range of the amplifier to operate in the proper segment of the band
C	Reduce the received signal noise
D	Set the amplifier for proper operation in the selected mode

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 an RF preamplifier
C	Installing bypass capacitors on the microphone cable
D	Using double-shielded coaxial cable

28. - T7C05

Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level?

Select	Answer
A	To comply with FCC rules on spectral purity
B	To lower the SWR on the transmission line
C	Because power supplies cannot supply enough current at high SWR
D	To protect the output amplifier transistors

29. - T7D02

How is a voltmeter connected to a component to measure applied voltage?

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

30. - T8A08

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

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

31. - T8B08

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

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

32. - T8C08

What is the Internet Radio Linking Project (IRLP)?

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

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. - T9A09

What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

Select	Answer
A	112
B	50
C	236
D	6

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