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

2. - T0B05

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

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

3. - T0C05

Why do exposure limits vary with frequency?

Select	Answer
A	Lower frequency RF fields have more energy than higher frequency fields
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	Higher frequency RF fields are transient in nature

4. - T1A03

What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

Select	Answer
A	It is required when transmitting emergency messages
B	It is required when in contact with foreign stations
C	All these choices are correct
D	It is encouraged

5. - T1B09

Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

Select	Answer
A	So that modulation sidebands do not extend beyond the band edge
B	All these choices are correct
C	To allow for calibration error in the transmitter frequency display
D	To allow for transmitter frequency drift

6. - T1C08

What is the normal term for an FCC-issued amateur radio license?

Select	Answer
A	Ten years
B	Eight years
C	Life
D	Five years

7. - T1D09

When may amateur stations transmit information in support of broadcasting, program production, or news gathering, assuming no other means is available?

Select	Answer
A	Never
B	Where noncommercial programming is gathered and supplied exclusively to the National Public Radio network
C	When broadcasting communications to or from the space shuttle
D	When such communications are directly related to the immediate safety of human life or protection of property

8. - T1E02

Who may be the control operator of a station communicating through an amateur satellite or space station?

Select	Answer
A	Only an Amateur Extra Class operator who is also an AMSAT member
B	Only an Amateur Extra Class operator
C	Any amateur allowed to transmit on the satellite uplink frequency
D	A General class or higher licensee with a satellite operator certification

9. - T1F07

Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a licensed amateur operator?

Select	Answer
A	The person must be a U.S. citizen
B	All these choices are correct
C	The foreign station must be in a country with which the U.S. has a third party agreement
D	The licensed control operator must do the station identification

10. - T2A11

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

Select	Answer
A	Multiplex
B	Full duplex
C	Diplex
D	Simplex

11. - T2B13

What is the purpose of a squelch function?

Select	Answer
A	Mute the receiver audio when a signal is not present
B	Eliminate parasitic oscillations in an RF amplifier
C	Reduce a CW transmitter's key clicks
D	Reduce interference from impulse noise

12. - T2C10

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

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

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	Both the transmitting and receiving antennas must be of the same polarization
C	Either vertically or horizontally polarized antennas may be used for transmission or reception
D	FM voice is unusable

14. - T3B05

What is the relationship between wavelength and frequency?

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

15. - T3C02

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

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

16. - T4A09

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

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

17. - T4B03

How is squelch adjusted so that a weak FM signal can be heard?

Select	Answer
A	Turn up the audio level until it overcomes the squelch threshold
B	Turn on the anti-squelch function
C	Enable squelch enhancement
D	Set the squelch threshold so that receiver output audio is on all the time

18. - T5A08

Which of the following is a good electrical insulator?

Select	Answer
A	Aluminum
B	Copper
C	Glass
D	Mercury

19. - T5B08

Which is equal to 1,000,000 picofarads?

Select	Answer
A	1000 microfarads
B	0.001 microfarads
C	1 microfarad
D	1,000,000,000 microfarads

20. - T5C07

What is the abbreviation for megahertz?

Select	Answer
A	mh
B	MHz
C	Mhz
D	MH

21. - T5D06

What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

Select	Answer
A	3 ohms
B	48 ohms
C	8 ohms
D	16 ohms

22. - T6A01

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

Select	Answer
A	Inductor
B	Resistor
C	Transformer
D	Inverter

23. - T6B01

Which is true about forward voltage drop in a diode?

Select	Answer
A	It indicates that the diode is defective
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 is proportional to peak inverse voltage

24. - T6C05

What is component 4 in figure T-1?

Select	Answer
A	Transistor
B	Ground symbol
C	Resistor
D	Battery

25. - T6D01

Which of the following devices or circuits changes an alternating current into a varying direct current signal?

Select	Answer
A	Transformer
B	Rectifier
C	Reflector
D	Amplifier

26. - T7A06

What device converts the RF input and output of a transceiver to another band?

Select	Answer
A	Phase converter
B	High-pass filter
C	Low-pass filter
D	Transverter

27. - T7B04

Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

Select	Answer
A	Preamplifier
B	Band-pass filter
C	Low-pass filter
D	Ferrite choke

28. - T7C04

What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

Select	Answer
A	Zero
B	50:50
C	1:1
D	Full Scale

29. - T7D06

Which of the following can damage a multimeter?

Select	Answer
A	Attempting to measure voltage when using the resistance setting
B	Attempting to measure resistance using the voltage setting
C	Failing to connect one of the probes to ground
D	Not allowing it to warm up properly

30. - T8A11

What is the approximate bandwidth required to transmit a CW signal?

Select	Answer
A	1000 Hz
B	150 Hz
C	15 kHz
D	2.4 kHz

31. - T8B10

What is a LEO satellite?

Select	Answer
A	A highly elliptical orbit satellite
B	A sun synchronous satellite
C	A satellite in low energy operation mode
D	A satellite in low earth orbit

32. - T8C04

Which of the following is good procedure when contacting another station in a contest?

Select	Answer
A	All these choices are correct
B	Send only the minimum information needed for proper identification and the contest exchange
C	Sign only the last two letters of your call if there are many other stations calling
D	Contact the station twice to be sure that you are in his log

33. - T8D05

Which of the following is an application of APRS?

Select	Answer
A	Providing voice over internet connection between repeaters
B	Providing information on the number of stations signed into a repeater
C	Providing real-time tactical digital communications in conjunction with a map showing the locations of stations
D	Showing automatically the number of packets transmitted via PACTOR during a specific time interval

34. - T9A10

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

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

35. - T9B08

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

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

Figure T-1